1.
Pečiulytė S, Štikonas A. Sturm-Liouville Problem for Stationary Differential Operator with Nonlocal Two-Point Boundary Conditions. NAMC [Internet]. 2006 Feb. 27 [cited 2025 Jul. 3];11(1):47-78. Available from: https://www.zurnalai.vu.lt/nonlinear-analysis/article/view/14764