Estimating the Concentration of Nitrates in Water Samples Using PSO and VNS Approaches. - Pablo López-Espí; Sancho Salcedo-Sanz; Ángel M. Pérez-Bellido; Emilio G. Ortíz-García; Oscar Alonso-Garrido; Antonio Portilla-Figueras (EvoWorkshops, 2009)

A Hybrid Grouping Genetic Algorithm for the Multiple-Type Access Node Location Problem. - Oscar Alonso-Garrido; Sancho Salcedo-Sanz; Luis E. Agustín-Blas; Emilio G. Ortíz-García; Ángel M. Pérez-Bellido; José Antonio Portilla-Figueras (IDEAL, 2009)

A comparative study of two hybrid grouping evolutionary techniques for the capacitated P-median problem. - Itziar Landa-Torres; Javier Del Ser; Sancho Salcedo-Sanz; Sergio Gil-Lopez; José Antonio Portilla-Figueras; Oscar Alonso-Garrido (Comput. Oper. Res., 2012)