TY - JOUR AU - Yavdat Il’yasov TI - Rayleigh quotients of the level set manifolds related to the nonlinear PDE JO - Minimax theory and its applications PY - 2022 VL - 7 IS - 2 UR - http://geodesic.mathdoc.fr/item/MTA_2022_7_2_a4/ ID - MTA_2022_7_2_a4 ER -