%A NATO Advanced Study Institute on Gauge Theory and the Early Universe %A Hazewinkel, Michiel %A Gerstenhaber, Murray %A NATO Advanced Study Institute on Deformation Theory of Algebras and Structures and Applications %T Deformation theory of algebras and structures and applications %I Kluwer Academic Publishers %D 1988 %S NATO ASI series %V ser. C . Mathematical and physical sciences ; v. 247 %U https://ci.nii.ac.jp/ncid/BA47849193