@article{JMAG_2005_12_a2,
     author = {S. Yu. Ignatovich},
     title = {On a connection of the approximation of nonlinear systems in the sense of time optimality and their algebraic approximation},
     journal = {\v{Z}urnal matemati\v{c}eskoj fiziki, analiza, geometrii},
     pages = {158--172},
     publisher = {mathdoc},
     volume = {12},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/JMAG_2005_12_a2/}
}