@article{TM_2002_236_a4,
     author = {A. V. Arutyunov},
     title = {Necessary {Extremum} {Conditions} and an {Inverse} {Function} {Theorem} without a~priori {Normality} {Assumptions}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {33--44},
     publisher = {mathdoc},
     volume = {236},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2002_236_a4/}
}