@article{IVM_2009_12_a4,
     author = {A. I. Perov},
     title = {On the {Hadamard} lemma and the {Lipschitz} condition},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {36--48},
     publisher = {mathdoc},
     number = {12},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2009_12_a4/}
}