1. Undergraduate Texts in Mathematics;M. Beck,2007
2. Beck, M., Zaslavsky, T.: Inside-out polytopes. Adv. Math. 205(1), 134–162 (2006)
3. Beck, M., Zaslavsky, T.: The number of nowhere-zero flows on graphs and signed graphs. J. Comb. Theory Ser. B 96(6), 901–918 (2006)
4. Billera, L.J., Björner, A.: Face Numbers of Polytopes and Complexes, 2nd edn., pp. 407–430. Chapman & Hall/CRC Press, London/Boca Raton (2004). Chap. 18
5. Breuer, F.: Ham sandwiches, staircases and counting polynomials. Ph.D. thesis, Freie Universität, Berlin (2009)