@article{SLC_1987_17_a6,
     author = {Wilfried Lex},
     title = {Einige {Bemerkungen} zu {Gleichheitstests} und deren {Komplexit\"at}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {17},
     year = {1987},
     url = {http://geodesic.mathdoc.fr/item/SLC_1987_17_a6/}
}