A New Method to Determine Composition Using High Energy Muons
Elbert, Jerome W., Sommers, Paul. 1987, ICRC, 2,458.

Arrival Directions of Ultra-High Energy Cosmic Rays
Baltrusaitis, R.M. et al.1987, ICRC, 2,40.

Direct Measurments of the Angular Distribution of Cherenkov Light and the Nitrogen Scintillation Yield in Ultra High Energy Extensive Air Showers
Baltrusaitis, R.M. et al.1987, ICRC, 6,401.

High Energy Cosmic Ray Extensive Air Showers
Sokolsky, P. 1987, ICRC, 8,318.

Search for Deeply Penetrating Particles in Extensive Air Showers above 10¹⁷ eV
Baltrusaitis, R.M. et al.1987, ICRC, 6,365.

Study of the Composition of Cosmic Rays with Energies Near 10¹⁸ eV
Baltrusaitis, R.M. et al.1987, ICRC, 1,394.

The Hires Fly's Eye Project
Cassiday, D.L. et al.1987, ICRC, 1,212.

The University of Utah Extensive Air Shower Array
Baltrusaitis, R.M. et al.1987, ICRC, 2,435.

The Utah Fly's Eye Detector
Baltrusaitis, R.M. et al.1987, ICRC, 2,4.