130199, 030299, 160499, 180599, 150699, 070799, 310899, 210999
120100, 010200, 270300, 290500, 140600, 110700, 310800, 200900
120101, 020201,280301,210501,060601,270601,190701,170901
070102,
310102, 030402,150502, 030602,240602, 150702,
090902
070103, 300103, 020403, 190503, 280503, 180603, 090703, 100903
080104, 020204, 300304, 180504, 270504, 210604, 150704, 080904
200105, 090205, 060405, 300505, 080605, 290605, 210705, 120905
100106, 310106, 060406, 310506, 060606, 270606, 180706, 040906
100107, 310107, 030407, 290507, 110607, 020707, 230707, 110907
Last modified: 16-Oct-07
E_mail: ugo@di.unipi.it