Erkoc, M. “Tubeless Percutaneous Nephrolithotomy Versus Standart Nephrolithotomy in Geriatric Patients: Single Surgeon Experience”. Annals of Medical Research, vol. 27, no. 4, May 2021, pp. 1168-71, http://www.annalsmedres.org/index.php/aomr/article/view/712.