@book {eSayrol02,
	title = {Senyals i sistemes anal{\`o}gics: una introducci{\'o} pr{\`a}ctica},
	year = {2002},
	isbn = {84-8301-610-9},
	url = {http://www.edicionsupc.es},
	author = {Elisa Sayrol and Gasull, A. and Moreno, A. and Salavedra, J. and Vallverdu, F.}
}
@book {eSayrol01,
	title = {Senyals i sistemes anal{\`o}gics: una introducci{\'o} pr{\`a}ctica},
	year = {2001},
	isbn = {84-8301-510-2},
	url = {www.edicionsupc.es},
	author = {Elisa Sayrol and Gasull, A. and Moreno, A. and Salavedra, J. and Vallverdu, F.}
}
@conference {cSayrol99a,
	title = {Simulaci{\'o}n digital de se{\~n}ales y sistemas anal{\'o}gicos},
	booktitle = {III Congreso de Usuarios de MATLAB},
	year = {1999},
	pages = {67{\textendash}76},
	isbn = {84-699-1358-1},
	author = {Sayrol E. and Gasull, A. and Moreno, A. and Vallverdu, F. and Salavedra, J. and Albert Oliveras}
}
