Andrzej Kisielewicz, “Unification in Commutative Semigroups”, Journal of Algebra, 200:1 (1998), 246
Volker Diekert, Yves Métivier, Handbook of Formal Languages, 1997, 457
Paliath Narendran, Friedrich Otto, Lecture Notes in Computer Science, 1256, Automata, Languages and Programming, 1997, 638
В. Г. Дурнев, “К проблеме разрешимости уравнений с одним коэффициентом”, Матем. заметки, 59:6 (1996), 832–845 ; V. G. Durnev, “On the solvability problem for equations with a single coefficient”, Math. Notes, 59:6 (1996), 601–610
Volker Diekert, Anca Muscholl, Lecture Notes in Computer Science, 1113, Mathematical Foundations of Computer Science 1996, 1996, 2
Leo P. Comerford, “Generic elements of free groups”, Arch Math, 65:3 (1995), 185
Mladen Bestvina, Mark Feighn, “Stable actions of groups on real trees”, Invent math, 121:1 (1995), 287
Friedrich Otto, “Solvability of word equations modulo finite special and confluent string-rewriting systems is undecidable in general”, Information Processing Letters, 53:5 (1995), 237
John R. Stallings, Geometric Group Theory, 1995, 165
E. Rips, Z. Sela, “Canonical representatives and equations in hyperbolic groups”, Invent Math, 120:1 (1995), 489