On the equivalence of compositions of morphisms and inverse morphisms on regular languages
RAIRO. Informatique théorique, Tome 19 (1985) no. 3, pp. 203-211. 
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     title = {On the equivalence of compositions of morphisms and inverse morphisms on regular languages},
     journal = {RAIRO. Informatique th\'eorique},
     pages = {203--211},
     publisher = {EDP-Sciences},
     volume = {19},
     number = {3},
     year = {1985},
     mrnumber = {809756},
     zbl = {0601.68049},
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     url = {http://www.numdam.org/item/ITA_1985__19_3_203_0/}
}
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Karhumäki, J.; Kleijn, H. C. M. On the equivalence of compositions of morphisms and inverse morphisms on regular languages. RAIRO. Informatique théorique, Tome 19 (1985) no. 3, pp. 203-211. http://www.numdam.org/item/ITA_1985__19_3_203_0/

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