@article{02213771, title = {On the boundary controllability of dynamical system described by the wave equation on a class of graphs (on trees).}, journal = {Zapiski Nauchnykh Seminarov POMI}, volume = {314}, year = {2004}, pages = {23-47}, doi = {10.1007/s10958-005-0471-x}, zbl = {1130.93013}, language = {en}, url = {http://dml.mathdoc.fr/item/02213771} }
Belishev, M.I. On the boundary controllability of dynamical system described by the wave equation on a class of graphs (on trees).. Zapiski Nauchnykh Seminarov POMI, Tome 314 (2004) pp. 23-47. doi : 10.1007/s10958-005-0471-x. http://gdmltest.u-ga.fr/item/02213771/