@article{ITA_1982__16_3_245_0, author = {P\u{a}un, Gheorghe}, title = {On simple matrix languages versus scattered context languages}, journal = {RAIRO. Informatique th\'eorique}, pages = {245--253}, publisher = {EDP-Sciences}, volume = {16}, number = {3}, year = {1982}, mrnumber = {686915}, zbl = {0505.68034}, language = {en}, url = {http://archive.numdam.org/item/ITA_1982__16_3_245_0/} }