Sakhaei, Shahrokh, et al. “Retrograde-Assisted Percutaneous Cystolitholapaxy Versus Transurethral Cystolithotripsy With Holmium-YAG Laser, A Retrospective Study”. Journal of Lasers in Medical Sciences, vol. 10, no. Supplement, Dec. 2019, pp. S54-S58, https://journals.sbmu.ac.ir/jlms/article/view/26782.