Bulgarian Academy of Science & International cosmic ray conference. (1977). International cosmic ray conference: Conference papers, august 13-26, 1977, Plovdiv, Bulgaria; Vol. 12; Late papers miscellanea. Plovdiv, Bulgarian Academy of Science, 1977.
Chicago Style (17th ed.) CitationBulgarian Academy of Science and International cosmic ray conference. International Cosmic Ray Conference: Conference Papers, August 13-26, 1977, Plovdiv, Bulgaria; Vol. 12; Late Papers Miscellanea. Plovdiv, Bulgarian Academy of Science, 1977, 1977.
MLA (9th ed.) CitationBulgarian Academy of Science and International cosmic ray conference. International Cosmic Ray Conference: Conference Papers, August 13-26, 1977, Plovdiv, Bulgaria; Vol. 12; Late Papers Miscellanea. Plovdiv, Bulgarian Academy of Science, 1977, 1977.