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@article{AL_1965_4_4_a2, author = {A. V. Gladkii}, title = {The algorithmic undecidability of inherent ambiguity of}, journal = {Algebra i logika}, pages = {53--63}, publisher = {mathdoc}, volume = {4}, number = {4}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1965_4_4_a2/} }
A. V. Gladkii. The algorithmic undecidability of inherent ambiguity of. Algebra i logika, Tome 4 (1965) no. 4, pp. 53-63. http://geodesic.mathdoc.fr/item/AL_1965_4_4_a2/