@article{10_4064_cm_26_1_367_369,
     author = {A. Zi\k{e}ba},
     title = {On the paradox of two $R_1, R_2$ domains in {Schwarzschild} exterior solution},
     journal = {Colloquium Mathematicum},
     pages = {367--369},
     publisher = {mathdoc},
     volume = {26},
     number = {1},
     year = {1972},
     doi = {10.4064/cm-26-1-367-369},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-26-1-367-369/}
}