%0 Journal Article %A Calvert, R.W. %A Wills, P. %T The Case for 4D Monitoring with Sparse OBC %D 2003 %J , %V %@ 2214-4609 %C cp-6-00309 %R https://doi.org/10.3997/2214-4609-pdb.6.A15 %I European Association of Geoscientists & Engineers, %X %U https://www.earthdoc.org/content/papers/10.3997/2214-4609-pdb.6.A15