@article{COCV_2020__26_1_A91_0,
     author = {Chaves-Silva, F.W. and Puel, J.-P. and Santos, M.C.},
     title = {Boundary null controllability as the limit of internal controllability: {The} heat case},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     publisher = {EDP-Sciences},
     volume = {26},
     year = {2020},
     doi = {10.1051/cocv/2020013},
     mrnumber = {4175378},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1051/cocv/2020013/}
}