@article{10_37236_3309,
     author = {Helmut Prodinger},
     title = {An identity conjectured by {Lacasse} via the tree function},
     journal = {The electronic journal of combinatorics},
     year = {2013},
     volume = {20},
     number = {3},
     doi = {10.37236/3309},
     zbl = {1295.05037},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/3309/}
}