Rodrigo Pacheco-Ruiz and  Jonathan Adams and  Felix Pedrotti,  4D Modelling of Low Visibility Underwater Archaeological Excavations Using Multi-Source Photogrammetry in the Bulgarian Black Sea.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2018, vol. 136(4). 334 - 341
    [viewed 07 July 2020]. Available from: https://publications.waset.org/pdf/10008896.