@article{IVM_1967_1_a7,
     author = {A. I. El'tsov},
     title = {Quadrature in the sense of {Lebesgue} of a~parametrized surface},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {49--56},
     publisher = {mathdoc},
     number = {1},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1967_1_a7/}
}