Published in Vigo by Universidade de Vigo
Electronically available from 2016 -

Published in Iran, Islamic Republic of by University of Isfahan
Electronically available from 2013 -

Published in Tabrīz by Dānishgāh-i ̒ulūm-i pizishkī va khadamāt-i bihdāshtī darmānī-i Tabrīz
Electronically available from 2013 -

Electronically available from 2011 -

Published in Santiago de Compostela by Sindicato Nacional de CC.OO. de Galicia
Electronically available from 2010 -

Published in Tehran by Tehran University
Electronically available from 2010 -

Published in Dubai, UAE by Iranian Red Crescent Society
Electronically available from 2010 -

Published in Tihrān by Jihād-i dānishgāhī, pizhūhishkadah-i ̒ulūm-i bihdāshtī
Electronically available from 2008 -

Published in Santiago de Compostela by Instituto Galego das Artes Escénicas e Musicais
Electronically available from 2007 - 2012

Published in A Coruña by Asociación de Enxeñeiros de Telecomunicación de Galicia
Electronically available from 2005 -

Electronically available from 2005 -

Electronically available from 2005 -

Electronically available from 2003 -

Electronically available from 2003 -

Published in Santiago de Compostela by Instituto Galego das Cualificacións
Electronically available from 2003 -