@article{Lee_2021, title={ViroidDB: a database of viroids and viroid-like circular RNAs}, volume={50}, ISSN={1362-4962}, url={http://dx.doi.org/10.1093/nar/gkab974}, DOI={10.1093/nar/gkab974}, number={D1}, journal={Nucleic Acids Research}, publisher={Oxford University Press (OUP)}, author={Lee, Benjamin D and Neri, Uri and Oh, Caleb J and Simmonds, Peter and Koonin, Eugene V}, year={2021}, month=Nov, pages={D432–D438} }