@article{832636, author = {Kenneth Herwig and W Snow and R Blasdell and P Sokol}, title = {Deviations from the Impulse Approximation in Liquid 4He, Momentum Transfer Dependence}, year = {1991}, number = {44}, month = {1991-01-01 00:01:00}, publisher = {Physical Review B (Condensed Matter and Materials Physics)}, language = {en}, }