ps2pdf is a bit faster but sometimes fails to handle files that neevia does handle.
Also randomly I just found this page of amazing docs by Gernot Hoffmann !!! It's mostly pedantic stuff, but the docs are unbelievably well made, with nice simple writing, tons of details, and FIGURES, omg omg, it's so nice to have actual figures drawing out the plots and geometries of things.
Some of�the great ones I've looked at so far :
cielab - tons of details, figures, gamut plots, etc.
planar projections - also see Euler angles, Gimbal lock, etc. lots of great intro-to-computer-graphics topics.
Another random interesting paper : A Chronology of Interpolation: From Ancient Astronomy to Modern Signal and Image Processing
And some good authors :