Walter Didimo, Francesco Giordano, Giuseppe Liotta. Upward Spirality and Upward Planarity Testing. SIAM J. Discrete Math., 23(4):1842-1899, 2009. [doi]
@article{DidimoGL09,
title = {Upward Spirality and Upward Planarity Testing},
author = {Walter Didimo and Francesco Giordano and Giuseppe Liotta},
year = {2009},
doi = {10.1137/070696854},
url = {http://dx.doi.org/10.1137/070696854},
tags = {Spiral, testing},
researchr = {https://researchr.org/publication/DidimoGL09},
cites = {0},
citedby = {0},
journal = {SIAM J. Discrete Math.},
volume = {23},
number = {4},
pages = {1842-1899},
}