http://www.sciencedirect.com/science/article/pii/S0278262606000431 http://www.sciencedirect.com/science/article/pii/S0278262606... Let me know if you can't acc

http://www.sciencedirect.com/science/article/pii/S0278262606000431 http://www.sciencedirect.com/science/article/pii/S0278262606... Let me know if you can't access the full article/the abstract is not enough.