@article{10_37236_127,
     author = {Rafael Ayala and Luis M. Fern\'andez and Jos\'e A. Vilches},
     title = {Discrete {Morse} inequalities on infinite graphs},
     journal = {The electronic journal of combinatorics},
     year = {2009},
     volume = {16},
     number = {1},
     doi = {10.37236/127},
     zbl = {1182.05088},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/127/}
}