@article{INTO_1998_60_a3,
     author = {S. A. Vakhrameev},
     title = {A note on convexity in smooth nonlinear systems},
     journal = {Itogi nauki i tehniki. Sovremenna\^a matematika i e\"e prilo\v{z}eni\^a. Temati\v{c}eskie obzory},
     pages = {42--73},
     publisher = {mathdoc},
     volume = {60},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTO_1998_60_a3/}
}