The Purchasing Chessboard - Christian Schuh, Robert Kromoser, Michael F. Strohmer, Ramón Romero Pérez, Alenka Triplat; Kromoser, Robert; Schuh, Christian; Romero Pérez, Ramón; Strohmer, Michael F.; Triplat, Alenka (Springer Berlin Heidelberg, 2009)