John G. Myers, Marshall T. Rose. Post Office Protocol - Version 3. RFC, 1725:1-18, November 1994. [doi]
@article{rfc1725, title = {Post Office Protocol - Version 3}, author = {John G. Myers and Marshall T. Rose}, year = {1994}, month = {November}, doi = {10.17487/RFC1725}, url = {https://doi.org/10.17487/RFC1725}, researchr = {https://researchr.org/publication/rfc1725}, cites = {0}, citedby = {0}, journal = {RFC}, volume = {1725}, pages = {1-18}, }