@Book{kopka04,
  author =    {Kopka, Helmut and Daly, Patrick W.},
  title =     {Guide to \LaTeX},
  publisher = {Addison-Wesley},
  year =      {2004},
  edition =   {4}
}

@Book{goossens04,
  author =    {Mittelbach, Frank and Goossens, Michel},
  title =     {The \LaTeX{} Companion},
  publisher = {Addison-Wesley},
  year =      {2004},
  edition =   {2}
}

@Online{lshort,
  author =    {Oetiker, Tobias and others},
  title =     "{A (Not So) Short Introduction to LaTeX2e}",
  url =       {http://ctan.org/tex-archive/info/lshort}
}

@Online{ZEUSGuide,
  author =    {Foster, Brian},
  title =     "{The guide to writing ZEUS papers}",
  url =       {http://pi.physik.uni-bonn.de}
}

@Article{tugboat:robertson,
  author =    {Robertson, Will},
  title =     "{Font loading in \LaTeX\ using the fontspec package: Recent updates}",
  journal =   {TUGboat},
  volume =    39,
  number =    2,
  year =      2018,
  url =       {https://tug.org/TUGboat/tb39-2/tb122robertson-fontspec.pdf},
}