L e<chr_var letter="s" var="long">∫</chr_var> ren<chr_var letter="s" var="long">∫</chr_var> cerchier t<chr_abbr type="reg" class="dc" expan="an" cert="no">a-hbar</chr_abbr>t <chr_abbr type="reg" class="dc" expan="que" cert="no">q-hbar</chr_abbr>le <chr_abbr type="reg" class="sc" expan="tru" cert="no">t-u</chr_abbr>i<chr_var letter="s" var="long">∫</chr_var><chr_var letter="s" var="long">∫</chr_var>e. 