Jim Schaad. S/MIME Capabilities for Public Key Definitions. RFC, 6664:1-19, July 2012. [doi]
@article{rfc6664, title = {S/MIME Capabilities for Public Key Definitions}, author = {Jim Schaad}, year = {2012}, month = {July}, doi = {10.17487/RFC6664}, url = {https://doi.org/10.17487/RFC6664}, researchr = {https://researchr.org/publication/rfc6664}, cites = {0}, citedby = {0}, journal = {RFC}, volume = {6664}, pages = {1-19}, }