Посилання:Geometry of flocks and n-ary groups / S. Dog // Algebra and Discrete Mathematics. — 2019. — Vol. 28, № 1. — С. 60–74. — Бібліогр.: 25 назв. — англ.
Semiabelinan flocks and n-ary groups are characterized by the properties of parallelograms and vectors of the affine geometry defined by these flocks and n-ary groups.