Rather, S. A., Dar, T. I., Malik, A. A., Rather, A. A., Khan, A., Parray, F. Q., & Wani, R. A. (2010). Subcutaneous internal lateral sphincterotomy (SILS) versus nitroglycerine ointment in anal fissure: A prospective study. International Journal of Surgery, 8(3), 248-251. https://doi.org/10.1016/j.ijsu.2010.01.013

Rather, Shiraz Ahmad, Tanveer Iqbal Dar, Aijaz Ahmad Malik, Aijaz Ahmad Rather, Asima Khan, Fazal Q. Parray, and Rauf Ahmad Wani. "Subcutaneous Internal Lateral Sphincterotomy (SILS) Versus Nitroglycerine Ointment in Anal Fissure: A Prospective Study." International Journal of Surgery 8, no. 3 (2010): 248-251. https://doi.org/10.1016/j.ijsu.2010.01.013.

Rather, Shiraz Ahmad, et al. "Subcutaneous Internal Lateral Sphincterotomy (SILS) Versus Nitroglycerine Ointment in Anal Fissure: A Prospective Study." International Journal of Surgery, vol. 8, no. 3, 2010, pp. 248-251, https://doi.org/10.1016/j.ijsu.2010.01.013.