Links:
[1] https://www.die.upm.es/en/category/categoria/tesis-doctorales
[2] https://www.die.upm.es/en/perfil/carlos-carreras-vaquer-0
[3] https://www.die.upm.es/en/content/octavio-nieto-taladriz-garc%C3%AD
[4] https://www.die.upm.es/sites/default/files/Tesis%20Gabriel%20Caffarena%20Fern%C3%A1ndez.pdf