Retrieved 2012-11-02. ↑ Sutter, Alexandrescu "C++ coding standards" #15 ↑ Gabriel Dos Reis; Bjarne Stroustrup (22 March 2010). "General Constant Expressions for System Programming Languages, Proceedings SAC '10" (PDF). ↑ Jaakko Järvi; Bjarne Stroustrup; Douglas Gregor; Jeremy Siek (April 28, 2003).