MINOR PLANET CIRCULARS/MINOR PLANETS AND COMETS. minorplanetcenter.net [online]. Minor Planet Center, 2016-04-06 [cit. 2020-05-11]. Dostupné online. ISSN0736-6884.
MINOR PLANET CIRCULARS/MINOR PLANETS AND COMETS. minorplanetcenter.net [online]. Minor Planet Center, 2016-04-06 [cit. 2020-05-11]. Dostupné online. ISSN0736-6884.