@article{MZM_2016_100_4_a6,
     author = {M. Yu. Kokurin},
     title = {On the {Convexity} of {Images} of {Nonlinear} {Integral} {Operators}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {544--552},
     publisher = {mathdoc},
     volume = {100},
     number = {4},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2016_100_4_a6/}
}