After I compile my .tex file I get this error:
LaTeX Warning: There were undefined references. Package biblatex
Warning: Please (re)run BibTeX on the file(s): (biblatex) anteproyecto (biblatex) and rerun LaTeX afterwards.
This is the structure of my document:
\documentclass[12pt,a4paper]{article}
\usepackage{filecontents}
\begin{filecontents*}{\jobname.bib}
@article{paper,
author = "You and Me",
title = "Hello",
note = "World",
year = "2013",
keywords = "mobile"
}
@online{icao,
title = "We all",
url = "http://www.latex.com",
keywords = "latex"
}
\end{filecontents*}
\usepackage[utf8]{inputenc}
\usepackage[spanish, es-tabla]{babel}
\begin{document}
\bibliography{\jobname}
\end{document}
I use Texmaker editor (I configured for UTF8 enconding and biblatex + pdflatex compiling) and Texlive.
I am newbie with tex. Any help will be appreciated.

biblatex + pdflatexfor compiling becausebiblatexis not a binary. There is no such programme. Whatever you are seeing, the warning you posted, is not from that code. – cfr Oct 03 '15 at 02:55filecontentsenvironment should come before\documentclass. If you want to use the package, put\RequirePackage{filecontents}first, but remember this will overwrite existing files. – cfr Oct 03 '15 at 02:55