http://en.wikipedia.org/wiki/Fourier_series

http://mathworld.wolfram.com/FourierSeries.html

http://www.sosmath.com/fourier/fourier1/fourier1.html

http://www.fourier-series.com/

http://www.stewartcalculus.com/data/CALCULUS%20Early%20Transcendentals/upfiles/FourierSeries5ET.pdf

http://www.physics.miami.edu/~nearing/mathmethods/fourier_series.pdf

http://www.intmath.com/fourier-series/fourier-intro.php

http://www.jhu.edu/signals/fourier2/index.html

http://www.uwec.edu/walkerjs/media/fseries.pdf

http://www.univie.ac.at/future.media/moe/galerie/fourier/fourier.html

http://ptolemy.eecs.berkeley.edu/eecs20/week8/examples.html

http://www.math24.net/definition-of-fourier-series.html

http://home.aubg.bg/students/MNG090/BT2_FSER.pdf

http://www.falstad.com/fourier/e-logsound.html

http://www.dspguide.com/ch13/4.htm

http://tutorial.math.lamar.edu/Classes/DE/ConvergenceFourierSeries.aspx

http://www.google.com/url?sa=t&rct=j&q=fourier+series+examples&source=web&cd=16&ved=0CFYQFjAFOAo&url=http%3A%2F%2Fwww.eng.fsu.edu%2F~shih%2Feml3050%2Flecture%2520notes%2FFourier%2520Series%2520Example.ppt&ei=HiAlUP-MJsWGhQfCx4BA&usg=AFQjCNEAP0sc5RGFJsXUe3bDuAyMLqf_UQ

http://demonstrations.wolfram.com/ExamplesOfFourierSeries/

http://www.math24.net/complex-form-of-fourier-series.html

http://www.google.com/url?sa=t&rct=j&q=fourier+series+examples&source=web&cd=23&ved=0CEoQFjACOBQ&url=http%3A%2F%2Fwww.ele.uri.edu%2Fcourses%2Fele436%2FFourierSeries.ppt&ei=1iElUPb-OMSyhAemqYGoCQ&usg=AFQjCNHWF3zAxQYvFkD2ebuagIWqzcmsGw

http://mi.eng.cam.ac.uk/~rwp/Maths/vid09/l7notes.pdf

http://www.math.psu.edu/srikrish/math251/notes/fourierconv.pdf

http://www.cse.salford.ac.uk/profiles/gsmcdonald/H-Tutorials/Fourier-series-tutorial.pdf

http://www.math24.net/differentiation-and-integration-of-fourier-series.html

http://www.sosmath.com/fourier/fourier5/fourier5.html

http://oldweb.cecm.sfu.ca/personal/jborwein/fourierII.pdf

http://www.math.odu.edu/~jhh/samp3.PDF

http://www.ugcs.caltech.edu/~kratsg/files/notes/ACM95b/handout_7.pdf

http://www.maths.ed.ac.uk/~jmf/Teaching/MT3/IntegralTransforms.pdf 

http://www.uio.no/studier/emner/matnat/fys/FYS3140/index-eng.xml

http://hans.math.upenn.edu/~zheliu/spring2012/exam

https://ece.uwaterloo.ca/~math213/

http://www.math.ucdavis.edu/~hunter/m201b/m201b.html

http://saturn.ece.ndsu.nodak.edu/ecewiki/images/6/65/Ece343_08s_test2.pdf

http://ggnindia.dronacharya.info/MEDept/Downloads/QuestionBank/IIIsem/Math_ME_IIIsem.pdf

http://math.berkeley.edu/~mcivor/math54s11/fr3soln.pdf