Improved bounds for the number of forests and acyclic orientations in the square lattice.
Calkin, N. ; Merino, C. ; Noble, S. ; Noy, M.
The Electronic Journal of Combinatorics [electronic only], Tome 9 (2003), / Harvested from The Electronic Library of Mathematics
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Publié le : 2003-01-01
EUDML-ID : urn:eudml:doc:122840 
@article{01862496,
     title = {Improved bounds for the number of forests and acyclic orientations in the square lattice.},
     journal = {The Electronic Journal of Combinatorics [electronic only]},
     volume = {9},
     year = {2003},
     zbl = {1020.05041},
     language = {en},
     url = {http://dml.mathdoc.fr/item/01862496}
}

Calkin, N.; Merino, C.; Noble, S.; Noy, M. Improved bounds for the number of forests and acyclic orientations in the square lattice.. The Electronic Journal of Combinatorics [electronic only], Tome 9 (2003) . http://gdmltest.u-ga.fr/item/01862496/