**Author details**

Manuel Domínguez-Morales1 \*, Ángel Varela-Vaca2 and Lourdes Miró-Amarante1

1 Architecture and Computer Technology Department, University of Seville, Seville, Spain

2 Languages and Computer Systems Department, University of Seville, Seville, Spain

\*Address all correspondence to: mjdominguez@us.es

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