@article{MAIS_2008_15_4_a2,
     author = {Yu. V. Bondarenko},
     title = {Invariance of quasiconcave functions cone under the action of positive operators},
     journal = {Modelirovanie i analiz informacionnyh sistem},
     pages = {23--30},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAIS_2008_15_4_a2/}
}