Zech, G. (1968). The determination of the mass of the earth + moon system by dynamical method from observations of Eros. Veröffentlichungen des Astronomischen Rechen-Instituts Heidelberg.
Chicago Style (17th ed.) CitationZech, Gert. "The Determination of the Mass of the Earth + Moon System by Dynamical Method from Observations of Eros." Veröffentlichungen Des Astronomischen Rechen-Instituts Heidelberg 1968.
MLA (9th ed.) CitationZech, Gert. "The Determination of the Mass of the Earth + Moon System by Dynamical Method from Observations of Eros." Veröffentlichungen Des Astronomischen Rechen-Instituts Heidelberg, 1968.
Warning: These citations may not always be 100% accurate.