M ai<chr_var letter="s" var="long">∫</chr_var> celui <chr_abbr type="reg" class="dc" expan="que" cert="no">q-hbar</chr_abbr> ion<chr_abbr type="reg" class="dc" expan="ani" cert="no">ai-hbar</chr_abbr> deri<chr_abbr type="reg" class="dc" expan="en" cert="no">e-hbar</chr_abbr>. 