How to cite section of a paper or chapter a book

For section of a book you can add reference of type @inbook to bibtex, but for my purposes it is usually easier to cite using

\cite[section~1.1]{foo}

 this way you can for instance cite several parts / sections / chapters from the same book or paper.

This is cool :) You don't know how ti write a LaTeX symbol, detextify it!

If you are looking for a symbol, but don't know how to LaTeX write it, you may use detexify:

http://detexify.kirelabs.org/classify.html

How to clear footer in beamer templates

This one works for me to make an empty footer

http://stackoverflow.com/questions/1435837/how-to-remove-footers-of-latex-beamer-templates