"Akira Sekiguchi,Yutaka Ishida","Halogen-Substituted Cyclotrigermenes: The ƒÎ(Ge=Ge)?ƒÐ*(Ge?X) Interaction and a Unique Dynamic Behavior",,"Phosphorus Sulfur and Silicon and the Related Elements",,"Vol. 186","no. 6","pp. 1317-1322",2011,June