Optical tomography in additive manufacturing: a review, processes, open problems, and new opportunitiesMohit Dharnidharka, Utkarsh Chadha, Lohitha Manya Dasari, Aarunya Paliwal, Yash Surya and Senthil Kumaran SelvarajEur. Phys. J. Plus, 136 11 (2021) 1133DOI: https://doi.org/10.1140/epjp/s13360-021-02108-1