Warning for readers of the pdf version
The pdf version of the Planck explanatory supplement still has a few problems:
- The bibliography is not displayed in the pdf version. Due to an incompatibility between the extension that formats the bibliography and the pdf generation software, instead of the bibliography you will only see the mediwiki tags that generate the bibliography entries in the online version;
- Some of the figures in the online version are not correctly displayed in the pdf version;
- Some of the equations are not correctly displayed in the pdf version. Instead you see the LaTex code that produces the equations.