@article{SM_2014_205_12_a5,
     author = {M. Yu. Kokurin},
     title = {Convexity properties of images under nonlinear integral operators},
     journal = {Sbornik. Mathematics},
     pages = {1775--1786},
     publisher = {mathdoc},
     volume = {205},
     number = {12},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2014_205_12_a5/}
}