I want to study a little bit more of Sine and Cosine Integral. I looked through all my text books including Calculus, ODE, PDE, Linear Algebra...........Nothing!!! I found info on the web, but mostly are definitions. Where is this subject belongs to? Anyone can give me a link to a more complete description? I have these already: http://mathworld.wolfram.com/SineIntegral.html?affilliate=1 http://en.wikipedia.org/wiki/Trigonometric_integral I would like to have a more text book type with some exercise. Thanks.