Grammar theory based on lattice-ordered monoid. - Xiuhong Guo (Fuzzy Sets Syst., 2009)

Pumping lemma in lattice finite automata: A note. - Xiuhong Guo; Jiehong Xu (FSKD, 2012)

A comment on "Automata theory based on complete residuated lattice-valued logic: Pushdown automata". - Xiuhong Guo (Fuzzy Sets Syst., 2012)