1. M. A. Akivis, “Three-Webs of Multidimensional Surfaces,” Trudy Geom. Semin. 2, 7–31 (1969).
2. M. A. Akivis, “On Isoclinic Three-Webs and their Interpretation in a Ruled Space of Projective Connection,” Sib. Mat. Zh. 15, No. 1, 3–15 (1974) [Siberian Math. J. 15, No. 1, 1–9 (1974)].
3. M. A. Akivis, “Webs and Almost-Grassmann Structures,” Sib. Mat. Zh. 23, No. 6, 6–15 (1982) [Siberian Math. J. 23, No. 6, 763–770 (1983)].
4. M. A. Akivis and V. V. Goldberg, “Differential Geometry of Webs,” in Handbook of Differential Geometry (Elsevier Science B. V., 2000), pp. 1–152.
5. M. A. Akivis and A. M. Shelekhov, Geometry and Algebra of Multidimensional Three-Webs (Kluwer Academic Publishers, Dordrecht, 1992).