@article{JMAG_2005_1_1_a5,
     author = {L. V. Fardigola},
     title = {On controllability problems for the wave equation on a half-plane},
     journal = {\v{Z}urnal matemati\v{c}eskoj fiziki, analiza, geometrii},
     pages = {93--115},
     year = {2005},
     volume = {1},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JMAG_2005_1_1_a5/}
}