Wagner, Edward K.; Hewlett, Martinez J. (1999). Basic virology. Malden, MA: Blackwell Science, Inc. p. 249. ISBN0-632-04299-0. Retrieved 30 March 2020.
Rozanov MN, Koonin EV, Gorbalenya AE (August 1992). "Conservation of the putative methyltransferase domain: a hallmark of the 'Sindbis-like' supergroup of positive-strand RNA viruses". The Journal of General Virology. 73 (Pt 8): 2129–34. CiteSeerX10.1.1.532.7367. doi:10.1099/0022-1317-73-8-2129. PMID1645151.
Koonin EV, Dolja VV (1993). "Evolution and taxonomy of positive-strand RNA viruses: implications of comparative analysis of amino acid sequences". Critical Reviews in Biochemistry and Molecular Biology. 28 (5): 375–430. doi:10.3109/10409239309078440. PMID8269709.
This inclusion was due to TaxoProp 2017.006G, which proposed Riboviria. The confusion might be due to the TaxoProp's reference to a "monophyly of all RNA viruses", improperly termed as it was only demonstrated with RdRP. On the other hand, the proposed definition of Riboviria did correctly mention RdRP
.
Rozanov MN, Koonin EV, Gorbalenya AE (August 1992). "Conservation of the putative methyltransferase domain: a hallmark of the 'Sindbis-like' supergroup of positive-strand RNA viruses". The Journal of General Virology. 73 (Pt 8): 2129–34. CiteSeerX10.1.1.532.7367. doi:10.1099/0022-1317-73-8-2129. PMID1645151.
Koonin EV, Dolja VV (1993). "Evolution and taxonomy of positive-strand RNA viruses: implications of comparative analysis of amino acid sequences". Critical Reviews in Biochemistry and Molecular Biology. 28 (5): 375–430. doi:10.3109/10409239309078440. PMID8269709.
Rozanov MN, Koonin EV, Gorbalenya AE (August 1992). "Conservation of the putative methyltransferase domain: a hallmark of the 'Sindbis-like' supergroup of positive-strand RNA viruses". The Journal of General Virology. 73 (Pt 8): 2129–34. CiteSeerX10.1.1.532.7367. doi:10.1099/0022-1317-73-8-2129. PMID1645151.