The associated journal article, unfortunately, appears to be paywalled: http://www.sciencedirect.com/science/article/pii/S0191886915301227 http://www.sciencedi

The associated journal article, unfortunately, appears to be paywalled: http://www.sciencedirect.com/science/article/pii/S0191886915301227 http://www.sciencedirect.com/science/article/pii/S0191886915...