Frahm, Ellery. Introducing the Peabody-Yale Reference Obsidians (PYRO) sets: Open-source calibration and evaluation standards for quantitative X-ray fluorescence analysis. Retrieved from https://par.nsf.gov/biblio/10129483. Journal of Archaeological Science: Reports 27.C Web. doi:10.1016/j.jasrep.2019.101957.

Frahm, Ellery. Introducing the Peabody-Yale Reference Obsidians (PYRO) sets: Open-source calibration and evaluation standards for quantitative X-ray fluorescence analysis. Journal of Archaeological Science: Reports, 27 (C). Retrieved from https://par.nsf.gov/biblio/10129483. https://doi.org/10.1016/j.jasrep.2019.101957

Frahm, Ellery. "Introducing the Peabody-Yale Reference Obsidians (PYRO) sets: Open-source calibration and evaluation standards for quantitative X-ray fluorescence analysis". Journal of Archaeological Science: Reports 27 (C). Country unknown/Code not available. https://doi.org/10.1016/j.jasrep.2019.101957. https://par.nsf.gov/biblio/10129483.

@article{osti_10129483,
place = {Country unknown/Code not available}, title = {Introducing the Peabody-Yale Reference Obsidians (PYRO) sets: Open-source calibration and evaluation standards for quantitative X-ray fluorescence analysis}, url = {https://par.nsf.gov/biblio/10129483}, DOI = {10.1016/j.jasrep.2019.101957}, abstractNote = {}, journal = {Journal of Archaeological Science: Reports}, volume = {27}, number = {C}, author = {Frahm, Ellery}, }