@incollection{JEDP_2007____A4_0,
     author = {Shirikyan, Armen},
     title = {Controllability of nonlinear {PDE{\textquoteright}s:} {Agrachev{\textendash}Sarychev} approach},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {4},
     pages = {1--11},
     publisher = {Groupement de recherche 2434 du CNRS},
     year = {2007},
     doi = {10.5802/jedp.43},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/jedp.43/}
}