By Baltazar P.   Lara V.   Córdoba G.   Arroyo R.   in Journal of Sol-Gel Science and Technology

ISSN:0928-0707|37|2|129-133

Springer Publishing Company ‎(2006)‎

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By Henriques D.   Biscaia M.   Baltazar P.   Mateus P.   in Logic Journal of the IGPL

ISSN:1368-9894|20|6|1175-1201

Oxford University Press‎(2012)‎

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