@manual{xkeyval, title = {The \textsf{xkeyval} package}, subtitle = {Extension of the keyval package}, author = {Adriaens, Hendri}, url = {http://www.ctan.org/pkg/xkeyval}, urldate = {2020-07-05}, date = {2014-03-12}, version = {2.7a} } @manual{etoolbox, title = {The \sty{etoolbox} Package. An e-\TeX{} Toolbox for Class and Package Authors}, author = {Philipp Lehman and Joseph Wright}, url = {http://www.ctan.org/pkg/etoolbox}, urldate = {2020-07-05}, date = {2019-09-21}, version = {2.5h} } @manual{koma, title = {KOMA -- Script. A versatile \LaTeXe{} bundle}, author = {Frank Neukam and Markus Kohm and Axel Kielhorn}, url = {http://www.ctan.org/pkg/koma-script}, urldate = {2020-07-05}, date = {2020-04-19}, version = {3.30} }