@article{EP_1998_4_a4,
     author = {E. Fern\`andez-Cara},
     title = {Remarks on the approximate and null controllability of semilinear parabolic equations},
     journal = {ESAIM. Proceedings},
     pages = {73--81},
     publisher = {mathdoc},
     volume = {4},
     year = {1998},
     doi = {10.1051/proc:1998021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1051/proc:1998021/}
}