@conference{239181, author = {Paul Stutzman}, title = {Reference Materials and Proficiency Testing for Validating X-Ray Powder Diffraction Measurements of Cement Composition}, year = {2018}, month = {2018-09-11}, publisher = {20th International Conference of Building Materials, Weimar, -1}, url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=925966}, language = {en}, }