@article{MZM_2007_81_3_a13,
     author = {V. V. Shan'kov},
     title = {Variational {Problem} with {Degeneracy} at the {Boundary} of the {Interval}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {464--471},
     publisher = {mathdoc},
     volume = {81},
     number = {3},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2007_81_3_a13/}
}