@article{VMJ_2011_13_1_a3,
     author = {K. K. Kudaybergenov and K. U. Begjanova},
     title = {Description of weakly additive order-preserving functionals on the plane},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {31--37},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2011_13_1_a3/}
}