D e<chr_var letter="s" var="long">∫</chr_var>on pen<chr_var letter="s" var="long">∫</chr_var>er. <chr_abbr type="reg" class="dc" expan="que" cert="no">q-hbar</chr_abbr> <chr_abbr type="frq" class="ct" expan="molt" cert="no">ml[apost]t</chr_abbr> li ple<chr_var letter="s" var="long">∫</chr_var>t. 