1)            Gardham, J.R.C., Hassan M.A. and Hobsley, M. The Measurement of Duodenal Reflux in Aspirated Gastric. Juice.  Brit.J.Surg 1968; 55:855.

2)            Hassan M A . and Hobsley M . Positioning of nasogastric tube without fluroscopy . Gut 1968 (Dec.); 9:728

3)            Hobsley, M., GardhamJ.R.C.and Hassan, M.A. The Characteristics of Human Alkaline Gastric Secretion: A study of 30 patients with peptic ulceration. In Gregor And Reid O. Ed. Modern Gastroentrology. Published by Schattaur – Veilag, Stuttgart and New York. 1969; 151 – 153

4)            Hassan M A and Hobsley M . Correlation between maximal gastric secretion and body stature in normal subjects and duodenal ulcer patients .Brit. J. Surg 1969 (Sep) ; 56 : 701

5)            Hassan, M.A. Gall Bladder Disease in Khartoum Hospital. Sud. M. J .1970; 8:52-55

6)            Hassan, M.A. Total Body Pottassium and Calculated Lean Body Mass.  Sud. M.J.1970; 3:76 – 81

7)            Hobsley M and Hassan M A . The acid component of gastric juice in normal  subjects and duodenal ulcers and gastric ulcers .  Brit J. Surg.  1970 (May) ; 57 : 389

8)            Hassan, M.A. and Hobsley, M. Positioning of Subjects and Nasogastric Tube during a Gastric Secretion Study. Brit. M.J.1970; 1:458-460.

9)            Hassan, M.A. and Hobsley, M. The Accurarte Assement of Maximal Gastric Secretion in Control Subjects and Patients with Doudenal Ulcer. Brit.J. Surg.1971; 171-179.

10)        Hassan, M.A. Gardham, J.R.C.Hobsley, M. Evaluation of Errors in Gastric Secretion Studies. Sud.M.J. 1972; 10:  214-219.

11)        Hassan, M.A.The Relationship Between Maximal Gastric Secretion and Lean Body Stature in Gastric Secretion in Gastric Ulcer Patients. Sud.M.J.1972; 10:69-74

12)         Abdel Rahim, Y. and Hassan, M.A. Hemihepatectomy for Hepatoma of the Liver. Sud.M.J.1972; 10:174-176.

13)        Russel RC., Fiddian-Green RG., Hassan M A ., Royston CM., Hobsley M .. The relationship between pyloric reflux and gastric ulcer. Brit. J. Surg. 1972 (Nov) ; 59 : 905

14)        Hassan, M.A. and Hobsley, M. Maximal Gastric Secretion in Patients wirh Chronic Airway Obstruction. Brit.J. Surg. 1973; 60:300-302.

15)        Hassan, M.A. Ibrahim ,A.and Fadl , E.T. Stab Wound of The Heart with Cardiac Tamponade : Review of the Literature with a case report . Sud. M.J. 1973; 10:40-44.

16)        Hassan, M.A.,Rahman, I.A.,and Rahmam, E.A. Postoperative Deep Vein Thrombosis in Sudanese Patients .Brit. M.J. 1973; 1:515-517.

17)        Hassan, M.A. and El-Tom,A.E.A. Postoperative Wound Infection in Clean Surgical Operations in Kartoum Hospital . Sud. M.J. 1973; 11:71-73.

18)        Hassan, M.A. Rahman, E.A. and Rahman, I.A. Prostatectomy and Deep Vein Thrombosis in Sudanese Patients.Brit.J.Surg. 1974; 61:650-652.

19)        Hobsley M . , Hassan M A . , Cameron A . , Faber RG ., Whitfield P ., Duodenal ulcer and maximal gastric secretion . Brit . J . Surg. 1974 (April) ; 61: 328 – 329

20)        Arbab, B.M.O. and Hassan, M.A. Peptic Ulcer in Khartoum Civil Hospital. Tropical Doctor. 1979; 6: 112-113

21)        Boulos , P.B. , Okosdonossian , E.T., El Minshid, H.,El Masri , S.H., Hassan, M.A. and Hobsley ,M. Gastric Secretion and Basal  Gastrin  Concentration in Bilharsial Hepatic Fibrosis . Gut. 1978; 19: 802-807.

22)        El Masri, S.H.,Boulos , P.B.,Ibrahim, O.H.and Hassan, M.A.Haemodynamic Effects of Splenectomy and Vasoligation in Bilharzial Hepatic Fibrosis .Brit .J.Surg. 1980; 67: 111-114

23)        Yagi ,  K.I. , Mukhtar, E., Zein , M., Abu Asha, H.and Hassan ,M.A.Management of  Hyperthyroidism : 10 Years  Experience .Sud.M.J. 1981; 17:11-17

24)        El Masri, S.H. and Hassan, M.A.Splenectomy and Vasoligation for Patients with Haematemesis Secondary to Bilharzial Hepatic Fibrosis. Brit. J.Surg. 1982; 69:314-316

25)        Saad,A.M.A.,Sulciman, S.I. and Hassan ,M.A. The Clinical Presentation of PepticUlcer in Khartoum .Sud. M.J. 1985; 23:35-41.

26)        Kheir , A.M., Ahmed, M.E.,Yagi, K. ,Kaballo,A.M.,El Mahdi,Hassan, M.A. and Mukhtar ,E. The Clinical Pattern of Thyroid Disease in Khartoum Teaching Hospital, A review of 2348 patients .Sud. M.J. 1986; 24: 79-86.

27)        Saad, A.M.A. and Hassan, M.A.The Pattern of Haematemesis in Khartoum .Sud. M.J. 1986; 24: 21-29.

28)        Ahmed, M.E., Ibrahim, S.Z.,Arabi, Y.E. and Hassan , M.A.Metronidazole Prophylaxis in Acute Mural Appendicitis: A   single Intraoperative 500 mg nfusion .The Journal  of Hospital Infection .1987; 10:260-264

29)        Fahal, A.H. and Hassan, M.A.Fournier.s Gangrene in Khartoum. Brit. J. Urol. 1988; 61:451-454

30)        Okosdinossian , E.T. Al-Munshid, H.A., Ismail, H.M.,Whitfield, P.F., Hassan M.A. Comparison of Maximal Gastric Scretion in Controls & Doudenal Ulcer Patients from the Sudan and the United Kingdom .Annals of Saudi Medicine .1990;  10:511-515.

31)        Saad, A.M.,Homeida,M.,Tom, I.E., Nash, T., Bennett, J.L. and Hassan ,M.A. Oesaphageal Varices in a Region of   the Sudan Endemic for Schistosoma mansoni , Brit. J. Surg . 1991; 78: 1252-1253.

32)        Fahal , A.H. and  Hassan ,M.A. Mycetoma , Brit.J. Surg. 1992; 79: 1138-1141.

33)        Fahal , A.H., Sahal,R.B. , Suliman , S.H. and Hassan , M.A. The Acute Scrotum in Khartoum .Sud. M.J. 1992; 30: 29-39.

34)        Fahal, A.H.,Anwer A.G, Suliman ,S.H. and Hassan ,M.A. Appendicular Masses in Khartoum . Sud. M.J.1993; 30:86-97.

35)        Ahmed, M.E. and Hassan, M.A.Abdominal Tuberculosis, Ann R Coll Surg. Engl. 1994; 75-79.

36)            Fahal A. H., Hassan, M.A. & Sanhouri, M., Surgical Treatment of   Mycetoma. Sud. M.J. 1994; 32 : 94-104

37)            Fadlallah, A.I.,Fahal,A.H., Ahmed, M.E., Hassan, M.A. Pattern of 78-80 Postoperative Pyrexia in Khartoum. East African Medical Journal 1996;       73(1): 78-80

38)            Abdel Rahim, A.A., Ahmed, M.E.& Hassan, M.A. Respiratory Complications after Thyroidectomy and The Need for Tracheostomy in Patients with A large Goitre, Brit.J.Surg.1999; 86: 88-90.

39)            Fahal, A. H.and Hassan, M.A. Mycetoma in “ Tropical Surgery “. Karnel R and Lumley SP  published by Springer 2003 (chapter in a book).

40)            Abdelmoneim A A Abdalla, Ahmed AS Elsayed, Mohmed A.Hassan. Angiographic coronary artery anatomy in the Sudan Heart Centre.  Khartoum Medical   Journal 2009; : 162 – 164.

41)            Abubakr H M Alawad, Mustafa A Hussein, Mohamed A Hassan. Morphology and normal variations of the Cerebral Arterial Circle “of Willis” in Khartoum Diagnostic Centre. .  Khartoum Medical Journal 2009; 2: 215 – 219.

42)            Shakir Z Ibrahim, Beshir M Arbab, Suleiman H Suleiman, Osman Abdelwahab, Shawgi H Elmasri, Mohammed A Hassan. The natural history of bleeding oesophageal varices in patients with schistosomal portal hypertension.Khartoum Medical Journal 2010;3:385-392.

43)            Altayeb A.Ahmed ,Hassan A.Mohammed, Mohamed A.Hassan . Sex Determination from cranial measurements in Recent Northern Sudanese. Khartoum Medical Journal 2011; 4:539-547.