@article{ITA_1986__20_2_129_0,
     author = {Brzozowski, J. A. and Knast, Robert},
     title = {Graph congruences and pair testing},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {129--147},
     publisher = {AFCET - Gauthier-Villars},
     address = {Paris},
     volume = {20},
     number = {2},
     year = {1986},
     mrnumber = {860765},
     zbl = {0597.20050},
     language = {en},
     url = {http://www.numdam.org/item/ITA_1986__20_2_129_0/}
}