@article{bw-wibbt-07
, author = {Sergey Bereg and Hao Wang}
, title = {Wiener Indices of Balanced Binary Trees}
, journal = {Discrete Applied Mathematics}
, year = {2007}
, volume = {155}
, number = {4}
, pages = {457--467}
, url = {http://dx.doi.org/10.1016/j.dam.2006.08.003}
}