Asrorov FA, Perestyuk NA. Green-Samoilenko function and existence of integral sets of linear extensions of nonautonomous equations. Ukr. Mat. Zhurn. [Internet]. 1994Aug.25 [cited 2024Jun.2];46(8):1067–1071. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/5659