1. Astrophysical Quantities;Allen,1964
2. Mutual phenomena of Jupiter's satellites in 1973–1974;Brinkmann;Sky and Telescope,1972
3. Design and operation of the NASA 91.5-cm airborne telescope;Cameron;Ap. Optics,1971
4. Telescopes;Kuiper,1960
5. Theory of the four great satellites of Jupiter;Sampson;Mem. Roy. Ast. Soc.,1921