Stem semisimpl$ (all stems)
2 papers:
DLT-2014-AlmeidaR #automaton- Semisimple Synchronizing Automata and the Wedderburn-Artin Theory (JA, ER), pp. 49–60.
ICALP-1982-Reutenauer #algebra- Biprefix Codes and Semisimple Algebras (CR), pp. 451–457.
DLT-2014-AlmeidaR #automaton
ICALP-1982-Reutenauer #algebra