Control and Cybernetics
Control and Cybernetics > 2000 > Vol. 29, no 1 > 153-165
Control and Cybernetics > 2002 > Vol. 31, no 3 > 739-750
Control and Cybernetics > 2006 > Vol. 35, no 4 > 905-921
Control and Cybernetics > 2008 > Vol. 37, no 1 > 133-158