@article{10_37236_952,
     author = {Ghassan Firro and Toufik Mansour and Mark C. Wilson},
     title = {Longest alternating subsequences in pattern-restricted permutations},
     journal = {The electronic journal of combinatorics},
     year = {2007},
     volume = {14},
     doi = {10.37236/952},
     zbl = {1120.05004},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/952/}
}