@article{00809162,
title = {Representation of metamorphosis grammar in logic grammar: Proof trees and their lengths.},
journal = {Publications de l'Institut Math\'ematique. Nouvelle S\'erie},
volume = {55(69)},
year = {1994},
pages = {1-6},
zbl = {0830.03012},
language = {en},
url = {http://dml.mathdoc.fr/item/00809162}
}
Prešić, Marica D. Representation of metamorphosis grammar in logic grammar: Proof trees and their lengths.. Publications de l'Institut Mathématique. Nouvelle Série, Tome 55(69) (1994) pp. 1-6. http://gdmltest.u-ga.fr/item/00809162/