@article{ITA_1985__19_3_233_0,
     author = {K\"onig, Roman},
     title = {Reduction algorithms for some classes of aperiodic monoids},
     journal = {RAIRO. Informatique th\'eorique},
     pages = {233--260},
     publisher = {EDP-Sciences},
     volume = {19},
     number = {3},
     year = {1985},
     mrnumber = {809758},
     zbl = {0571.20066},
     language = {en},
     url = {http://www.numdam.org/item/ITA_1985__19_3_233_0/}
}