%0 Journal Article %A Akahori, Takao %A Miyajima, Kimio %T An analogy of Tian-Todorov theorem on deformations of $CR$-structures %J Compositio Mathematica %D 1993 %P 57-85 %V 85 %N 1 %I Kluwer Academic Publishers %U http://www.numdam.org/item/CM_1993__85_1_57_0/ %G en %F CM_1993__85_1_57_0