%0 Journal Article %T Leftmost Derivations of Propagating Scattered Context Grammars: A New Proof %A Tomas Masopust %A Jiri Techet %J Discrete Mathematics & Theoretical Computer Science %D 2008 %I Discrete Mathematics & Theoretical Computer Science %X In 1973, Virkkunen proved that propagating scattered context grammars which use leftmost derivations are as powerful as context-sensitive grammars. This paper brings a significantly simplified proof of this result. %U http://www.dmtcs.org/dmtcs-ojs/index.php/dmtcs/article/view/712