Date:             09/08/97
Value:            678
Who:              Susanne Heipcke
Method:           CLP
Computation Time: 440.6 s
Machine:          Sun SparcStation 5, 32Mb memory

Date:             06/13/97
Value:            571
Who:              Cristina C. B. Cavalcante and Cid Carvalho de Souza
Method:           Tabu Search
Computation time: 2 h 16 m 54 s
Machine:          SUN SPARCstation