TY  - JOUR
A1  - Kolb, Hans-Peter
A1  - Michaelis, Jens
A1  - Mönnich, Uwe
A1  - Morawietz, Frank
T1  - An operational and denotational approach to non-context-freeness
Y1  - 2003
SN  - 0304-3975
ER  -