@article{1987-Leijenhorst-Recursion,
  author		= "Leijenhorst, D.C. van and Weide, Th.P. van der",
  title			= "{On a recursion connected with tree balancing algorithms}",
  journal		= "Information Processing Letters",
  volume		= "205",
  year			= "1987",
  pages			= "305--310",
  class			= "Journal"
}