A note on the tool switching problem of a flexible machine. - Kari Salonen; Csaba Raduly-Baka; Olli Nevalainen (Comput. Ind. Eng., 2006)

The general two-level storage management problem: A reconsideration of the KTNS-rule. - Mika Hirvikorpi; Kari Salonen; Timo Knuutila; Olli Nevalainen (Eur. J. Oper. Res., 2006)