1. Observations of the eclipse of Iapetus in the shadow of the globe crepe ring, and bright ring of Saturn, November 1, 1889;Barnard;M.N.R.A.S.,1890
2. Photoelectric observations of Saturn satellites Rhea and Titan;Blanco;Astron. Astrophys.,1971
3. On the observation of occultation of stars by Saturn's rings;Bobrov;Sov. Astron.-A.J.,1963
4. Physical properties of Saturn's rings;Bobrov,1970
5. Mesures photometriques de Saturne et de son anneau;Camichel;Ann. Astrophys.,1958