@article{JIS_2009__12_7_a5,
     author = {Manes, K. and Sapounakis, A. and Tasoulas, I. and Tsikouras, P.},
     title = {Recursive generation of $k$-ary trees},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {12},
     number = {7},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2009__12_7_a5/}
}