@article{ITA_1990__24_4_409_0,
     author = {Guaiana, G. and Restivo, A. and Salemi, S.},
     title = {Complete subgraphs of bipartite graphs and applications to trace languages},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {409--417},
     publisher = {EDP-Sciences},
     volume = {24},
     number = {4},
     year = {1990},
     mrnumber = {1079722},
     zbl = {0701.68063},
     language = {en},
     url = {http://www.numdam.org/item/ITA_1990__24_4_409_0/}
}