@article{Venturi_2012 author = {Daniele Venturi and George Em Karniadakis}, title = {DIFFERENTIAL CONSTRAINTS FOR THE PROBABILITY DENSITY FUNCTION OF STOCHASTIC SOLUTIONS TO THE WAVE EQUATION}, journal = {International Journal for Uncertainty Quantification}, issn = {2152-5080}, year = {2012}, volume = {2}, number = {3}, pages = {195--213} }