On the complexity of a hypermap. - A. Machì (Discret. Math., 1982)

An Example of an Indexed Language of Intermediate Growth. - Rostislav I. Grigorchuk; A. Machì (Theor. Comput. Sci., 1999)

Preface. - A. Machì; Jaroslav Nesetril; Patrice Ossona de Mendez; Jorge L. Ramírez Alfonsín (Eur. J. Comb., 2012)