@online{pdfreference,
title= {PDF Reference, sixth edition},
author={{Adobe Systems Incorporated}},
url =  {https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/pdfreference1.7old.pdf},
year = {2006},
urldate={2024-02-17},
      }

@book{pdfspec-iso32000-1,
  author={{Adobe Systems Incorporated}},
  title={Document management -- Portable document format -- Part 1: PDF 1.7},
  date={2008-07-01},
  edition={1},
  url={https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/PDF32000_2008.pdf},
  urldate={2024-02-17},
}


@book{pdfspec-iso32000-2_2017,
  author={{International Standard}},
  title={ISO 32000-2:2017(en)},
  subtitle={Document management — Portable document format — Part 2: PDF 2.0},
  date={2017-07},
  edition={1},
  url={https://www.iso.org/obp/ui/#iso:std:iso:32000:-2:ed-1:v1:en},
  urldate={2021-04-18},
}

@book{pdfspec-iso32000-2_2020,
  author={{International Standard}},
  title={ISO 32000-2:2020(en)},
  subtitle={Document management — Portable document format — Part 2: PDF 2.0},
  date={2020-12},
  edition={2},
  url={https://www.iso.org/obp/ui/#iso:std:iso:32000:-2:ed-2:v1:en},
  urldate={2021-04-18},
}
@online{pac2024,
title = {PDF Accessibility Checker (PAC 2024)},
url = {https://pac.pdf-accessibility.org/},
urldate ={2024-02-17}}

@online{verapdf,
title = {veraPDF},
author={{veraPDF consortium}},
url = {https://verapdf.org/}
}

@online{ngpdf,
title = {Next-Generation PDF},
author={{Dual Lab}},
url = {https://ngpdf.com}
}

@online{mathexamples,
title = {MathML Associated Files Examples},
author={\LaTeX\ Project},
url = {https://github.com/latex3/tagging-project/discussions/56},
urldate={2024-02-19}
}

@online{tugaccess,
title={PDF accessibility and PDF standards},
author= {{TeX User Group}},
url= {https://tug.org/twg/accessibility/}
}

@inproceedings{todasoifferdeims2024,
author={Roman Toda  and Jing Mu and Youqiang Wu and Neil Soiffer},
title = {PDF Document Object Model Support for Math},
year={2024},
booktitle    = {The 5th International Workshop on Digitization and E-Inclusion in Mathematics and Science 2024},
publisher    = {The DEIMS2024 Organizing Committee},
url={https://workshop.sciaccess.net/deims2024/DEIMS2024_Proceedings.zip}
}

@inproceedings{mittelbachfischerdeims2024,
author={Frank Mittelbach und Ulrike Fischer},
title = {Enhancing LATEX to Automatically Produce Tagged and
Accessible PDF},
year={2024},
booktitle    = {The 5th International Workshop on Digitization and E-Inclusion in Mathematics and Science 2024},
publisher    = {The DEIMS2024 Organizing Committee},
url={https://workshop.sciaccess.net/deims2024/DEIMS2024_Proceedings.zip}
}
