%0 Journal Article %A Kléman, Maurice %A Michel, Louise %T Spontaneous Breaking of Euclidean Invariance and Classification of Topologically Stable Defects and Configurations of Crystals and Liquid Crystals %J Les rencontres physiciens-mathématiciens de Strasbourg -RCP25 %Z talk:4 %D 1978 %P 45-48 %V 26 %I Institut de Recherche Mathématique Avancée - Université Louis Pasteur %U http://www.numdam.org/item/RCP25_1978__26__45_0/ %G en %F RCP25_1978__26__45_0