@article {14208, title = {Valence Electron Momentum Distributions of Ethylene: Comparison of EMS Measurements with near Hartree-Fock Limit, Configuration Interaction and Density Functional Theory Calculations}, journal = {Chem. Phys.}, volume = {196}, year = {1995}, pages = {13-35}, author = {B. P. Hollebone and J. J. Neville and Y. Zheng and C. E. Brion* and Y. Wang and E. R. Davidson} }