BAŠKIENĖ, Angelė. On normality of parabolic (φ, ξ  η,  λ)-structures. Lietuvos matematikos rinkinys, [S. l.], v. 43, n. spec., p. 161–164, 2003. DOI: 10.15388/LMR.2003.32375. Disponível em: https://www.journals.vu.lt/LMR/article/view/32375.. Acesso em: 20 may. 2024.