@manual{pst-gears,
  title = {The pst-gears package},
  subtitle = {Drawing internal and external gears},
  author = {Voß, Herbert},
  url = {https://ctan.org/pkg/pst-gears},
  urldate = {2026-04-28}, 
  date = {},
  version = {0.61},
}


@manual{metapost,
  title = {The metapost package},
  subtitle = {A development of Metafont for creating graphics},
  author = {Hobby, John and {The MetaPost Team}},
  url = {https://tug.org/metapost},
  urldate = {2026-04-28}, 
  date = {},
  version = {},
}

@manual{luamplib,
  title = {The luamplib package},
  subtitle = {Use LuaTeX’s built-in MetaPost interpreter},
  author = {Gesang, Philipp and Hagen, Hans and Hoekwater, Taco and Kim, Dohyun and Pégourié-Gonnard, Manuel and Roux, Élie},
  url = {https://ctan.org/pkg/luamplib},
  urldate = {2026-04-28}, 
  date = {2026-04-28},
  version = {2.41.0},
}


@manual{animate,
  title = {The animate package},
  subtitle = {Create PDF and SVG animations from graphics files and inline graphics},
  author = {Grahn, Alexander},
  url = {https://ctan.org/pkg/animate},
  urldate = {2026-04-30}, 
  date = {2024-10-14},
  version = {},
}