Search for Emission of Ultra--High-Energy Radiation from Active Galactic Nuclei
The Astrophysical Journal American Astronomical Society 418 (1993) 832
New limit on the rate-density of evaporating black holes.
Physical review letters 71:16 (1993) 2524-2527
Point source search techniques in ultra high energy gamma ray astronomy
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment Elsevier 328:3 (1993) 570-577
Daily search for emission of ultra-high-energy radiation from point sources
The Astrophysical Journal American Astronomical Society 405 (1993) 353
Results from the CYGNUS extensive air shower array
AIP Conference Proceedings AIP Publishing (1993) 1181-1188