Variations of the Gringorten square equal-area map projection
Cogley, J.G. (2002). Variations of the Gringorten square equal-area map projection. Cartography and Geographic Information Science 29(4): 381-390. https://dx.doi.org/10.1559/152304002782008341
In: Cartography and Geographic Information Science. Taylor & Francis: London. ISSN 1523-0406; e-ISSN 1545-0465, more