@article{ITA_1978__12_3_213_0,
     author = {Greibach, S. A.},
     title = {The strong independence of substitution and homomorphic replication},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {213--234},
     publisher = {EDP-Sciences},
     volume = {12},
     number = {3},
     year = {1978},
     mrnumber = {510639},
     zbl = {0387.68048},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ITA_1978__12_3_213_0/}
}