The Post Office Protocol (POP3) Simple Authentication and Security Layer (SASL) Authentication Mechanism. - Robert Siemborski; Abhijit Menon-Sen (RFC, 2007)

Salted Challenge Response Authentication Mechanism (SCRAM) SASL and GSS-API Mechanisms. - Chris Newman; Abhijit Menon-Sen; Alexey Melnikov 001; Nicolas Williams (RFC, 2010)