@article{Bacciu2013d,
  author = "D. Bacciu and A. Micheli and A. Sperduti",
  title = "Compositional Generative Mapping for Tree-Structured Data - Part II: Topographic Projection Model",
  year = 2013,
  journal = "IEEE Transactions on Neural Networks and Learning Systems",
  volume = 24,
  pages = "231-247",
  doi = "10.1109/TNNLS.2012.2228226",
  url = "https://ieeexplore.ieee.org/document/6395856"
}