Schaefer, Bradley E. (мај 2005). „The epoch of the constellations on the Farnese Atlas and their origin in Hipparchus's lost catalogue”. Journal for the History of Astronomy. 36/2 (123): 167—196. Bibcode:2005JHA....36..167S. S2CID15431718. doi:10.1177/002182860503600202.CS1 одржавање: Формат датума (веза)
Schaefer, Bradley E. (мај 2005). „The epoch of the constellations on the Farnese Atlas and their origin in Hipparchus's lost catalogue”. Journal for the History of Astronomy. 36/2 (123): 167—196. Bibcode:2005JHA....36..167S. S2CID15431718. doi:10.1177/002182860503600202.CS1 одржавање: Формат датума (веза)
Swerdlow, N. M. (август 1986). „A Star Catalogue Used by Johannes Bayer”. Journal of the History of Astronomy. 17 (50): 189—197. Bibcode:1986JHA....17..189S.
Schaefer, Bradley E. (мај 2005). „The epoch of the constellations on the Farnese Atlas and their origin in Hipparchus's lost catalogue”. Journal for the History of Astronomy. 36/2 (123): 167—196. Bibcode:2005JHA....36..167S. S2CID15431718. doi:10.1177/002182860503600202.CS1 одржавање: Формат датума (веза)