@article{10_21136_CMJ_1974_101272,
     author = {Stra\v{s}kraba, Ivan and Vejvoda, Otto},
     title = {Periodic solutions to a singular abstract differential equation},
     journal = {Czechoslovak Mathematical Journal},
     pages = {528--540},
     publisher = {mathdoc},
     volume = {24},
     number = {4},
     year = {1974},
     doi = {10.21136/CMJ.1974.101272},
     zbl = {0329.34053},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1974.101272/}
}