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2. Cibulka, J., Kynčl, J., Mészáros, V., Stolař, R., Valtr, P.: Generalizations of Peter Winkler’s Pizza Problem (in preparation)
3. Gourvest, H.: LPSolve IDE v5, http://www.progdigy.com;
4. Berkelaar, M., Dirks, J., Eikland, K., Notebaert, P.: lp_solve 5.5, http://lpsolve.sourceforge.net/5.5
5. Knauer, K., Micek, P., Ueckerdt, T.: How to eat 4/9 of a pizza (manuscript)