Alpha-shapes and flow shapes are homotopy equivalent

Tamal K. Dey, Joachim Giesen, and Matthias John
Proc. 35th Symp. Theory of Computing, ACM, Jun 2003, pp. 493–501

Cites:

The crust and the $\beta$-skeleton: combinatorial curve reconstruction

Fano Experimental Web Server, D. Eppstein, School of Information & Computer Science, UC Irvine