@article{IVM_1998_11_a5,
     author = {I. R. Kayumov},
     title = {On an extremal problem in airfoil theory},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {41--46},
     publisher = {mathdoc},
     number = {11},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1998_11_a5/}
}