The Equivalence Problem of Polynomially Bounded D0L Systems - a Bound Depending Only on the Size of the Alphabet.

Juha Honkala The Equivalence Problem of Polynomially Bounded D0L Systems - a Bound Depending Only on the Size of the Alphabet. 89-103 2003 36 Theory Comput. Syst. 1 http://dx.doi.org/10.1007/s00224-002-1075-1 db/journals/mst/mst36.html#Honkala03