Alternative energy sources VI/ द्वारा: International Conference on Alternative Energy Sources ( 6th : 1983 : Miami Beach, Florida), और अन्य प्रकाशित: (1983)
Alternative energy sources II / द्वारा: Miami International Conference on Alternative Energy Sources (2nd : 1979 : Miami Beach, Florida), और अन्य प्रकाशित: (1981)
Non-conventional energy sources / द्वारा: International Symposium on Non-Conventional Energy Sources (3rd : 1982 : Bogota), और अन्य प्रकाशित: (1984)