@article{MTA_2022_7_2_a4,
     author = {Yavdat Il{\textquoteright}yasov},
     title = {Rayleigh quotients of the level set manifolds related to the nonlinear {PDE}},
     journal = {Minimax theory and its applications},
     year = {2022},
     volume = {7},
     number = {2},
     zbl = {1490.35191},
     url = {http://geodesic.mathdoc.fr/item/MTA_2022_7_2_a4/}
}