@article{1093636941,
author = {Doets, Kees},
title = {On $n$-equivalence of binary trees.},
journal = {Notre Dame J. Formal Logic},
volume = {28},
number = {1},
year = {1987},
pages = { 238-243},
language = {en},
url = {http://dml.mathdoc.fr/item/1093636941}
}
Doets, Kees. On $n$-equivalence of binary trees.. Notre Dame J. Formal Logic, Tome 28 (1987) no. 1, pp. 238-243. http://gdmltest.u-ga.fr/item/1093636941/