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@article{AFM_1969_421-450_a23, author = {VJ. Nummi}, title = {Operator-operand languages}, journal = {Annales Fennici Mathematici}, publisher = {mathdoc}, volume = {421-450}, year = {1969}, doi = {10.5186/aasfm.1969.427}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1969.427/} }
VJ. Nummi. Operator-operand languages. Annales Fennici Mathematici, 421-450 (1969). doi : 10.5186/aasfm.1969.427. http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1969.427/
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