4 papers:
DLT-1993-DammHLR #complexity- Deterministic OL Languages are of Very Low Complexity: DOL is in AC0 (CD, MH, KJL, PR), pp. 305–313.
ICALP-1982-Karhumaki #equivalence #on the #problem- On the Equivalence Problem for Binary DOL Systems (JK), pp. 339–347.
STOC-1981-CulikH #decidability #equivalence #problem- The ω-Sequence Equivalence Problem for DOL Systems Is Decidable (KCI, TH), pp. 1–6.
ICALP-1976-Valiant #decidability #equivalence #problem- The Equivalence Problem for DOL Systems and its Decidability for Binary Alphabets (LGV), pp. 31–37.