Rob Coltun, Vince Fuller. The OSPF NSSA Option. RFC, 1587:1-17, March 1994. [doi]
@article{rfc1587, title = {The OSPF NSSA Option}, author = {Rob Coltun and Vince Fuller}, year = {1994}, month = {March}, doi = {10.17487/RFC1587}, url = {https://doi.org/10.17487/RFC1587}, researchr = {https://researchr.org/publication/rfc1587}, cites = {0}, citedby = {0}, journal = {RFC}, volume = {1587}, pages = {1-17}, }