@article{MZM_2014_96_3_a9,
     author = {G. I. Laptev},
     title = {Monotonicity {Conditions} for a {Class} of {Quasilinear} {Differential} {Operators} {Depending} on {Parameters}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {405--417},
     publisher = {mathdoc},
     volume = {96},
     number = {3},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2014_96_3_a9/}
}