E n<chr_var letter="s" var="long">∫</chr_var>a<chr_abbr type="reg" class="dc" expan="" cert="no">t-hbar</chr_abbr>re<chr_punc mark="comma" force="" synt="" extra="no">punc1</chr_punc> <chr_abbr type="reg" class="dc" expan="que" cert="no">q-hbar</chr_abbr> <chr_var letter="s" var="long">∫</chr_var>ejorner 