Švitra, Donatas, and Renata Retkutė. “Modifikuotos Mono Lygties Tyrimas”. Lietuvos matematikos rinkinys 39, no. III (December 17, 1999): 353–358. Accessed September 11, 2024. https://www.zurnalai.vu.lt/LMR/article/view/35655.