Gravitational effect in neutron diffraction by a curved quartz single crystal Alekseev, V. L. ; Lapin, E. G. ; Leushkin, E. K. ; Rumyantsev, V. L. ; Sumbaev, O. I. ; Fedorov, V. V. Abstract Publication: Soviet Journal of Experimental and Theoretical Physics Pub Date: August 1988 Bibcode: 1988JETP...67.1727A