Grinberg 1968. Grinberg, È. Ja. (1968), "Plane homogeneous graphs of degree three without Hamiltonian circuits", Latvian Math. Yearbook 4 (in Russian), Riga: Izdat. "Zinatne", pp. 51–58, MR0238732; English translation by Dainis Zeps, arXiv:0908.2563
Krooss 2004. Krooss, André (2004), "Die Barnette'sche Vermutung und die Grinberg'sche Formel", Analele Universităţii din Craiova. Seria Matematică-Informatică (in German), 31: 59–65, MR2153849
Grinberg 1968. Grinberg, È. Ja. (1968), "Plane homogeneous graphs of degree three without Hamiltonian circuits", Latvian Math. Yearbook 4 (in Russian), Riga: Izdat. "Zinatne", pp. 51–58, MR0238732; English translation by Dainis Zeps, arXiv:0908.2563