Online Handwritten Signature Verification Using Hidden Markov Models. - Juan J. Igarza; Iñaki Goirizelaia; Koldo Espinosa; Inmaculada Hernáez; Raúl Méndez; Jon Sánchez (CIARP, 2003)

An Electronic Secure Voting System Based on Automatic Paper Ballot Reading. - Iñaki Goirizelaia; Koldo Espinosa; José Luis Martín 001; Jesús Lázaro 001; Jagoba Arias; Juan J. Igarza (CIARP, 2004)

Link Management Protocol (LMP) Evaluation for SDH/Sonet. - Pedro Uria Recio; Peter Rauch; Koldo Espinosa (ICT, 2004)

Improving tag transfer for image annotation using visual and semantic information. - Sergio Rodríguez-Vaamonde; Lorenzo Torresani; Koldo Espinosa; Estíbaliz Garrote (CBMI, 2014)