GRINCEVIČIUS, K. Über Sharen von Hyperflächen im Raum korrelativer Elemente. Lithuanian Mathematical Journal, [S. l.], v. 8, n. 4, p. 727–734, 1968. DOI: 10.15388/LMJ.1968.20604. Disponível em: https://journals.vu.lt./LMJ/article/view/20604. Acesso em: 26 apr. 2025.