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The Comprehensive L TEX Symbol List, PDF, Notation
LaTeX Tutorials - A Primer - TUG
PDF) Essential LATEX ++
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spacing - Adjusting space when using the lettre class - TeX - LaTeX Stack Exchange
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More Math Into LaTeX [5ed.] 3319237950, 978-3-319-23795-4, 978-3-319-23796-1, 3319237969
How to change paragraph spacing in LaTeX - Overleaf, Online LaTeX Editor