@article{VSGTU_1999_7_a28,
     author = {N. V. Diligenskii},
     title = {Application of methods of perturbations in the theory of production functions},
     journal = {Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences},
     pages = {204--206},
     publisher = {mathdoc},
     number = {7},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGTU_1999_7_a28/}
}