@article{TIMM_2010_16_5_a5,
     author = {V. F. Demyanov and G. Sh. Tamasyan},
     title = {On direct methods for solving variational problems},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {36--47},
     year = {2010},
     volume = {16},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2010_16_5_a5/}
}