Degeneration and complexity of bilinear maps: Some asymptotic spectra. V. Strassen (1991) Journal für die reine und angewandte Mathematik
Diagonal swap procedures and characterizations of 2D-Delaunay triangulations C. Cherfils, F. Hermeline (1990) ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique