Cristóbal Luque David Quintana José María Valls Pedro Isasi Two-layered evolutionary forecasting for IPO underpricing. 2374-2378 2009 IEEE Congress on Evolutionary Computation https://doi.org/10.1109/CEC.2009.4983237 https://www.wikidata.org/entity/Q62043467 conf/cec/2009 db/conf/cec/cec2009.html#LuqueQVI09