Paolo Bottoni Shi-Kuo Chang Maria Francesca Costabile Stefano Levialdi Piero Mussio 14-21 1998 conf/vl/1998 VL db/conf/vl/vl98.html#BottoniCCLM98 https://doi.org/10.1109/VL.1998.706129 https://doi.ieeecomputersociety.org/10.1109/VL.1998.706129