M. Akivis/A. Shelekhov: Geometry and algebra of multidimensional three-webs. Kluwer 1992, 360p. 0-7923-1684-3. Dfl 290. Devoted to the study of smooth systems of curves and surfaces on the plane or in 3-space, the book contains a deep theory which is interrelated with differential geometrial, classical algebraic geometry and non-associative algebra. (H. Sachs) W. Blaschke: Einführung in die Geometrie der Waben. Birkhäuser 1955. W. Blaschke/G. Bol: Geometrie der Gewebe. Springer 1935. Vladislav Goldberg: Theory of multicodimensional (n+1)-webs. Nordhoff (?), 1988.