Estimating The Sun's Central Pressure and Temperature
http://burro.case.edu/Academics/Astr221/StarPhys/estcent.html

http://www.jgiesen.de/astro/temperature.htm

http://www.astronomy.ohio-state.edu/~dhw/Intro/lec6.html
LECTURE 6: PRINCIPLES OF STELLAR STRUCTURE


http://teacherlink.ed.usu.edu/tlnasa/reference/imaginedvd/files/imagine/docs/ask_astro/answers/981216a.html


http://www.astro.utu.fi/~cflynn/Stars/l3.html
Lecture 3 : Modeling Stars

FFYS4327 Introduction to Stellar Physics
http://www.astro.utu.fi/~cflynn/Stars/