Portfolio Selection with minimum investment constraints
G N Silva ; D E G Lima ; D A Carvalho ; E S Teixeira ; F Louzada ; F Barboza ; G Philippi ; J A Fiorucci ; J L S Gomes ; J R Ribeiro ; K A G Araújo ; M Miranda Neto ; N S Assis ; O F Guilarte ; P F Montano ; R K Ishizaka ; V O Martins ; Neto, Francisco Louzada ; Nunes, Geraldo