@misc{1196586, author = {Tim Borland}, title = {Stable implementation agreements for open systems interconnection protocols Version 3 Edition 1 December 1989:}, year = {1990}, month = {1990-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.SP.500-177}, language = {en}, }