Higher math for beginners (mostly physics and engineers) por Zeldovich, Ya B.

A simple non-euclidean geometry and its physical basis. por Yaglom, I. M.

Complex numbers in geometry. por Iaglom (Yaglom), I. M.

Geometric transformations por Yaglom, I. M. (Isaak Moiseevich) 1921-

Geometric transformations por Iaglom (Yaglom), I. M.

Convex figures por Iaglom (Yaglom), I.M. & V.G. Boltyanskii