@article{TIMM_2009_15_4_a1,
     author = {M. E. Abbasov and V. F. Demyanov},
     title = {Extremum conditions for a~nonsmooth function in terms of exhausters and coexhausters},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {10--19},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2009_15_4_a1/}
}