@techreport{IETF14b, address = {Fremont, California, U.S.A.}, author = {Porambage, Pawani and Schmitt, Corinna and Gurtov, Andrei and Gerdes, Stefanie}, howpublished = {online}, month = {feb}, publisher = {IETF}, title = {X.509 Public Key Infrastructure Certificates for the Constrained Application Protocol (CoAP)}, url = {http://tools.ietf.org/html/draft-porambage-core-ace-x509-00}, year = {2014} }