TY - CHAP AU - Berkovich, Yakov TI - Questions on set squaring in groups BT - Structure theory of set addition AU - Collectif ED - Deshouilliers Jean-Marc ED - Landreau Bernard ED - Yudin Alexander A. T3 - Astérisque PY - 1999 SP - 249 EP - 253 IS - 258 PB - Société mathématique de France UR - http://archive.numdam.org/item/AST_1999__258__249_0/ LA - en ID - AST_1999__258__249_0 ER -