@INPROCEEDINGS{WSOM01, 
   AUTHOR = {M. Hagenbuchner and A.C. Tsoi and A. Sperduti},
   TITLE = {A supervised self-organising map for structured data },
   BOOKTITLE = {WSOM 2001 - Advances in Self-Organising Maps},
   EDITOR = {N.Allinson and H.Yin and L.Allinson and J.Slack},
   PUBLISHER = {Springer},
   PAGES = {21-28},
   MONTH = {June},
   YEAR = {2001}}
}