@article{10_21136_CPMF_1940_121984,
     author = {Levy, Harry},
     title = {Conformal invariants in two dimensions. {[I.]}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky a fysiky},
     pages = {50--56},
     publisher = {mathdoc},
     volume = {69},
     number = {2},
     year = {1940},
     doi = {10.21136/CPMF.1940.121984},
     mrnumber = {0001641},
     zbl = {0022.39705},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.21136/CPMF.1940.121984/}
}