@article{234281, author = {Matthew Spidell and Joshua Hadler and Michelle Stephens and John Lehman and Paul Williams}, title = {Geometric contributions to chopper wheel optical attenuation uncertainty}, year = {2017}, month = {2017-12-09}, publisher = {Metrologia}, doi = {https://doi.org/10.1088/1681-7575/aa75d2/meta}, language = {en}, }