Kraan-Korteweg, R. C.; Loan, A. J.; Burton, W. B.; Lahav, O.; Ferguson, H. C.; Henning, P. A.; Lynden-Bell, D. Discovery of a nearby spiral galaxy behind the Milky Way. Nature. 1994, 372 (6501): 77. Bibcode:1994Natur.372...77K. doi:10.1038/372077a0.
Kraan-Korteweg, R. C.; Loan, A. J.; Burton, W. B.; Lahav, O.; Ferguson, H. C.; Henning, P. A.; Lynden-Bell, D. Discovery of a nearby spiral galaxy behind the Milky Way. Nature. 1994, 372 (6501): 77. Bibcode:1994Natur.372...77K. doi:10.1038/372077a0.