Alex Rousskov. Open Pluggable Edge Services (OPES) Callout Protocol (OCP) Core. RFC, 4037:1-56, March 2005. [doi]
@article{rfc4037, title = {Open Pluggable Edge Services (OPES) Callout Protocol (OCP) Core}, author = {Alex Rousskov}, year = {2005}, month = {March}, doi = {10.17487/RFC4037}, url = {https://doi.org/10.17487/RFC4037}, researchr = {https://researchr.org/publication/rfc4037}, cites = {0}, citedby = {0}, journal = {RFC}, volume = {4037}, pages = {1-56}, }