Solving Radial Topology Constrained Problems with Evolutionary Algorithms. - Pedro M. S. Carvalho; Luis A. F. M. Ferreira; Luis M. F. Barruncho (SEAL, 1998)

On spanning-tree recombination in evolutionary large-scale network problems - application to electrical distribution planning. - Pedro M. S. Carvalho; Luis A. F. M. Ferreira; Luis M. F. Barruncho (IEEE Trans. Evol. Comput., 2001)