@article{10_21136_CMJ_1973_101206,
     author = {Stra\v{s}kraba, Ivan and Vejvoda, Otto},
     title = {Periodic solutions to abstract differential equations},
     journal = {Czechoslovak Mathematical Journal},
     pages = {635--669},
     publisher = {mathdoc},
     volume = {23},
     number = {4},
     year = {1973},
     doi = {10.21136/CMJ.1973.101206},
     mrnumber = {0499577},
     zbl = {0275.34063},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1973.101206/}
}