...
| [IEEE Std 1003.1:2013] | Chapter 8, "Environment Variables" XSH, System Interfaces, strdup |
| [ISO/IEC 9899:2011] | Subclause 7.22.4, "Communication with the Environment" Subclause 7.22.4.6, "The getenv Function"Subclause K.3.6.2.1, "The getenv_s Function" |
| [MSDN] | _dupenv_s() and _wdupenv_s() |
| [Viega 2003] | Section 3.6, "Using Environment Variables Securely" |
...