Search for Emission of UHE Gamma Rays from the Crab Nebula Berley, D. ; Chang, Y. C. ; Dingus, L. B. ; Goodman, A. J. ; Haines, J. T. ; Stark, M. ; Ellsworth, W. R. ; Burman, L. R. ; Cady, R. D. ; Hoffman, M. C. ; Lloyd-Evans, J. ; Nagle, E. D. ; Potter, E. M. ; Sandberg, V. ; Wilkinson, C. ; Alexandreas, E. D. ; Allen, C. R. ; Biller, S. ; Dion, G. ; Lu, X. -Q. ; Vishwanath, R. P. ; Yodh, B. G. Abstract Publication: 21st International Cosmic Ray Conference (ICRC21) Pub Date: 1990 Bibcode: 1990ICRC....2..154B