1. Blumetti J., Cintron J.R. Anorectal Abscess and Fistula. In: Current Surgical Therapy., Saunders, an imprint of Elsevier Inc. - 265-274.
2. Golovenko A.O., Khalif I.L., Golovenko O.V. Profilaktika posleoperatsionnykh retsidivov bolezni Krona (obzor literatury). Koloproktologiya. - 2012. - 4 (42). - s. 40-48.
3. Konovich E.A., Khalif I.L., Shapina M.V. Immunopatogenez vospalitel'nykh zabolevanii kishechnika. Rossiiskii zhurnal gastroenterologii, gepatologii, koloproktologii. - 2013. -t. 23. - № 4. - s. 69-78.
4. Juncadella A.C., Alame A.M., Sands L.R. et al. Perianal Crohn’s disease: A review. Postgraduate Medicine. - 2015; 127 (3), 266-272.
5. Scharl M., Rogler G. Pathophysiology of fistula formation in Crohn’s disease. World Journal of Gastrointestinal Pathophysiology. - 2014; 5 (3), 205-212.