@article{COCV_2013__19_1_288_0,
     author = {Guerrero, Sergio and Imanuvilov, Oleg Yurievich},
     title = {Remarks on non controllability of the heat equation with memory},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {288--300},
     publisher = {EDP-Sciences},
     volume = {19},
     number = {1},
     year = {2013},
     doi = {10.1051/cocv/2012013},
     mrnumber = {3023071},
     zbl = {1258.93026},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/cocv/2012013/}
}