The high-energy muon flux at sea level obtained from an observation of the burst-size spectrum Higashi, S. ; Kitamura, T. ; Watase, Y. ; Oda, M. ; Tanaka, Y. Abstract Publication: Il Nuovo Cimento Pub Date: April 1964 DOI: 10.1007/BF02732585 Bibcode: 1964NCim...32....1H