Strong maximum and minimum principles for parabolic functional-differential problems with nonlocal inequalities $[u^j(t_0, x) - K^ j] + Σ_i h_ i(x)[u^j(T_i, x)-K^j] \stack{≤} {(≥)} 0$
Tom 52 / 1990
Annales Polonici Mathematici 52 (1990), 195-204
DOI: 10.4064/ap-52-2-195-204
