NAVICKIS, Kazimieras. Geometry of non-holonomic complexes NGr (1, 4, 4) in a four-dimensional affine space . Lietuvos matematikos rinkinys, [S. l.], v. 44, n. spec., p. 202–205, 2004. DOI: 10.15388/LMR.2004.31923. Disponível em: https://www.journals.vu.lt/LMR/article/view/31923.. Acesso em: 19 may. 2024.