Wu, X. Y., Chapman, M., Li, X. Y., 2012, Frenquency dependent AVO Attribute: Theory and Example, First Break, 30:67-72

Tillotson, P., Sothcott, J. Best, A, Chapman, M., and Li, X.-Y., 2012, Experimental verification of the fracture density and shear-wave splitting relationship using synthetic silica cemented sandstone with a controlled fracture geometry, Geophysical Prospecting, 60 (3), 515-525.