http://www.analog.com/library/analogdialogue/archives/43-09/EDCh%208%20filter.pdf

http://www.analog.com/static/imported-files/tech_docs/dsp_book_Ch20.pdf

http://www.ece.uah.edu/courses/ee426/Chebyshev.pdf

http://inst.eecs.berkeley.edu/~ee247/fa10/files07/lectures/L2_2_f10n.pdf

http://eelinux.ee.usm.maine.edu/courses/ele486/docs/Chebyshev%20II.pdf

http://my.safaribooksonline.com/book/electrical-engineering/9780750675475/appendix-design-equations/chebyshev_filter_response#X2ludGVybmFsX0J2ZGVwRmxhc2hSZWFkZXI/eG1saWQ9OTc4MDc1MDY3NTQ3NS80MTc=

http://www.lumerink.com/courses/ECE697A/docs/Matlab%20Filter%20Design%20and%20Implementation.pdf

http://www.gutenberg.org/files/31076/31076-pdf.pdf

http://books.google.com/books?id=1P20oORtnRwC&printsec=frontcover#v=onepage&q&f=false

http://books.google.com/books?id=Wkg6RXYMwcsC&printsec=frontcover#v=onepage&q&f=false

http://books.google.com/books?id=yGqKl06Ew3EC&printsec=frontcover#v=onepage&q&f=false

http://www.google.com/url?sa=t&rct=j&q=filter+elliptic+ppt&source=web&cd=9&cad=rja&ved=0CFoQFjAI&url=http%3A%2F%2Fcontrol.sdu.edu.cn%2Fbdsp%2Fkejian%2FChapter%25207%2520Filter%2520Design%2520Techniques.ppt&ei=QOodUarYBciK4gSGEQ&usg=AFQjCNG1zdiFiPUUe2P-FtDVRRxBLAsciA&bvm=bv.42553238,d.bGE