1.
Idczak D, Walczak S. Lagrange problem for fractional ordinary elliptic system via Dubovitskii–Milyutin method. NAMC [Internet]. 2020 Mar. 2 [cited 2025 Sep. 30];25(2):321–340. Available from: https://www.zurnalai.vu.lt/nonlinear-analysis/article/view/16520