First Results from the Mini-GRAAL Project for Gamma-Ray Astronomy above 50 GeV Arqueros, F. ; Berenguel, M. ; Borque, D. M. ; Garcia-Martin, F. J. ; Gebauer, H. -J. ; Martinez, S. ; Plaga, R. ; Weinrebe, G. Abstract Publication: International Cosmic Ray Conference Pub Date: 1997 Bibcode: 1997ICRC....5..149A