Neutron Interference by Division of Wavefront
A. G. Klein, P. D. Kearney, G. I. Opat, A. Cimmino, and R. Gähler
Phys. Rev. Lett. 46, 959 (1981) - Published 13 April, 1981
Chaos in the Einstein Equations
John D. Barrow
Phys. Rev. Lett. 46, 963 (1981) - Published 13 April, 1981