Update bibliography.bib

[philipwindecker]

Corrected title for Euler Angles.
Removed obsolete "." in titles and publishers

Reference to a related issue in the repository

#61

Add a description

Incorrect bib entry title replaced and redundant dots removed.

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@pmai

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• I have performed a self-review of my own code/documentation.
• My documentation changes are related to another repository in the organization. Here is the link to the issue/repo.
• My changes generate no new warnings during the documentation generation.
• The existing travis ci which pushes the documentation to gh-pages passes with my changes.