Publikacja Sagana, Ledeberga i innych opisująca widoczne szczegóły na powierzchni Marsa sfotografowane przez Marinera 9:
CARL SAGAN, JOSEPH VEVERKA, PAUL FOX, AND R’USSELL DUBISCH Laborntory for Planetary Studies, Cornell University, Ithaca, New York 14850
JOSHUA LEDERBERG, ELLIOTT LEVINTHAL, LYNN QUAAM, AND ROBERT TUCKER Department of Genetics, Stanford
University Medical School and Artijkial Intelligence Laboratory, Stanford University, Stanford, California 94305
JAMES B. POLLACK ames Research, Center, Moffett Field, California 94035 AND BRSDFORD A. SMITH Department
of Astronomy, New Mexico State Unioersity, Las Cruces. Xew Mexico 88001
Received May 22, 1972
CARL SAGAN, JOSEPH VEVERKA, PAUL FOX, AND R’USSELL DUBISCH
Variable Features on Mars: Preliminary Mariner 9 Television Results
ICARUS 17,346-372(1972
https://profiles.nlm.nih.gov/ps/access/BBABLV.pdf