@article{10_21136_CPM_1977_108524,
     author = {Pt\'ak, Vlastimil and Retach, V. S.},
     title = {Singular supports. {I}},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {382--388},
     publisher = {mathdoc},
     volume = {102},
     number = {4},
     year = {1977},
     doi = {10.21136/CPM.1977.108524},
     mrnumber = {0500060},
     zbl = {0375.47012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1977.108524/}
}