@incollection{JEDP_1977____9_0,
     author = {Baouendi, Mohamed S. and Zachmanoglou, E. C.},
     title = {Unique continuation theorems for solutions of partial differential equations and inequalities},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     pages = {9--15},
     publisher = {Ecole polytechnique},
     year = {1977},
     language = {en},
     url = {http://archive.numdam.org/item/JEDP_1977____9_0/}
}