John Collins. Portable Font Resource (PFR) - application/font-tdpfr MIME Sub-type Registration. RFC, 3073:1-6, March 2001. [doi]
@article{rfc3073, title = {Portable Font Resource (PFR) - application/font-tdpfr MIME Sub-type Registration}, author = {John Collins}, year = {2001}, month = {March}, doi = {10.17487/RFC3073}, url = {https://doi.org/10.17487/RFC3073}, researchr = {https://researchr.org/publication/rfc3073}, cites = {0}, citedby = {0}, journal = {RFC}, volume = {3073}, pages = {1-6}, }