Multidimensional trees and a Chomsky–Schützenberger–Weir representation theorem for simple context-free tree grammars
2014 ◽
Vol 26
(5)
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pp. 1469-1516
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2006 ◽
Vol 354
(1)
◽
pp. 82-97
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2007 ◽
Vol E90-D
(2)
◽
pp. 388-394
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