Not quite sure, but I think this is the main paper in question: https://arxiv.org/abs/1801.02711 https://arxiv.org/abs/1801.02711 Just reading the titles of R

Not quite sure, but I think this is the main paper in question: https://arxiv.org/abs/1801.02711 https://arxiv.org/abs/1801.02711 Just reading the titles of Riess' other papers on arXiv gives an interesting peek at the clever work that went into getting this H0 measurement. Thanks for sharing!