@article{DAN_1987_292_5_a8,
     author = {\`E. F. Tamm},
     title = {Quantitative estimation of the local minimum point in nonlinear},
     journal = {Doklady Akademii Nauk},
     pages = {1067--1069},
     publisher = {mathdoc},
     volume = {292},
     number = {5},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_292_5_a8/}
}