@phdthesis{THESE_1935__172__1_0,
     author = {Ssu-Pin Liau},
     title = {Photom\'etrie des clich\'es stellaires : application aux \'etoiles variables {GO} et {X} {Cygni}},
     series = {Th\`eses de l'entre-deux-guerres},
     number = {172},
     year = {1935},
     language = {fr},
     url = {http://www.numdam.org/item/THESE_1935__172__1_0/}
}