Stem bracket$ (all stems)

3 papers:

TOOLS-PACIFIC-1997-KeedyESM #implementation

Attribute Types and Bracket Implementations (JLK, ME, AS, GM), pp. 325–339.

TAGT-1994-PrusinkiewiczK

Subapical Bracketed L-Systems (PP, LK), pp. 550–564.

ICALP-1979-Wegner #approach #decidability #two-level grammar

Bracketed Two-Level Grammars — A Decidable and Practical Approach to Language Definitions (LMW), pp. 668–682.