The following publications are possibly variants of this publication:
- Cubic vertices in planar hypohamiltonian graphsCarol T. Zamfirescu. jgt, 90(2):189-207, 2019. [doi]
- A planar hypohamiltonian graph with 48 verticesCarol T. Zamfirescu, Tudor Zamfirescu. jgt, 55(4):338-342, 2007. [doi]
- Planar hypohamiltonian oriented graphsAlewyn P. Burger, Johan P. de Wet, Marietjie Frick, Nico Van Cleemput, Carol T. Zamfirescu. jgt, 100(1):50-68, 2022. [doi]