CASE STUDY: a practical approach for SPI in large Spanish companies. - Javier García Guzmán; Román López-Cortijo García; Antonio de Amescua Seco; Gonzalo Cuevas Agustín (Softw. Process. Improv. Pract., 2006)

iCharts: Charts for Software Process Improvement Value Management. - Román López-Cortijo García; Javier García Guzmán; Antonio de Amescua Seco (EuroSPI, 2007)