Freeman, Joshua Ponnampalam, Lalitha Shams, Haymen Mohandas, Reshma A Renaud, Cyril Dean, Paul Li, Lian He Davies, Giles Seeds, Alwyn Linfield, Edmund 2783428.pdf Supplementary text and figures Supplemental material 2017-08-30
    https://opticapublishing.figshare.com/articles/journal_contribution/2783428_pdf/5248195
10.6084/m9.figshare.5248195.v1