Existence of positive solutions for the singular equation $(\varphi_p(y^\prime))^\prime+g(t,y,y^\prime)=0$. НК [Internet]. 2003 Mar. 29 [cited 2026 Jan. 22];6(1):117-32. Available from: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/253