Periodic D0L Languages. - Tom Head; Barbara Lando (Theor. Comput. Sci., 1986)

Regularity of Sets of Initial Strings of Periodic D0L-Systems. - Tom Head; Barbara Lando (Theor. Comput. Sci., 1986)

Bounded D0L Languages. - Tom Head; Barbara Lando (Theor. Comput. Sci., 1987)

Periodicity and Ultimate Periodicity of D0L Systems. - Barbara Lando (Theor. Comput. Sci., 1991)