Journal of Systems Science and Complexity
Journal of Systems Science and Complexity > 2011 > 24 > 1 > 39-50
Journal of Systems Science and Complexity > 2011 > 24 > 2 > 207-217
Journal of Systems Science and Complexity > 2011 > 24 > 3 > 449-456
Journal of Systems Science and Complexity > 2011 > 24 > 6 > 1068-1082