New Nonterminal Complexity Results for Semi-conditional Grammars. - Henning Fernau; Lakshmanan Kuppusamy; Rufus O. Oladele (CiE, 2018)

Minimizing Rules and Nonterminals in Semi-conditional Grammars: Non-trivial for the Simple Case. - Henning Fernau; Lakshmanan Kuppusamy; Rufus O. Oladele; Indhumathi Raman (MCU, 2018)

Improved Descriptional Complexity Results for Simple Semi-Conditional Grammars. - Henning Fernau; Lakshmanan Kuppusamy; Rufus O. Oladele; Indhumathi Raman (Fundam. Informaticae, 2021)

Improved descriptional complexity results on generalized forbidding grammars. - Henning Fernau; Lakshmanan Kuppusamy; Rufus O. Oladele; Indhumathi Raman (Discret. Appl. Math., 2022)