@article{ZNSL_2004_312_a9,
     author = {V. I. Danilov and G. A. Koshevoy},
     title = {Discrete convexity},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {86--93},
     publisher = {mathdoc},
     volume = {312},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2004_312_a9/}
}