Media type: E-Article Title: Time-spectral density and wavelets approaches. Comparative study. Applications to SP500 returns and US GDP Contributor: Ahamada, Ibrahim; Jolivaldt, Philippe Published: Elsevier BV, 2013 Published in: Economic Modelling, 31 (2013), Seite 460-466 Language: English DOI: 10.1016/j.econmod.2012.12.007 ISSN: 0264-9993 Keywords: Economics and Econometrics Origination: Footnote: