Bruno Courcelle, Joost Engelfriet A Logical Characterization of the Sets of Hypergraphs Defined by Hyperedge Replacement Grammars. [Citation Graph (0, 0)][DBLP] Mathematical Systems Theory, 1995, v:28, n:6, pp:515-552 [Journal]
Matthias Krause, Stephan Waack Variation Ranks of Communication Matrices and Lower Bounds for Depth-Two Circuits Having Nearly Symmetric Gates with Unbounded Fan-In. [Citation Graph (0, 0)][DBLP] Mathematical Systems Theory, 1995, v:28, n:6, pp:553-564 [Journal]
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