@article{10_21136_MB_1994_126123,
     author = {Rudolf, Boris},
     title = {A periodic boundary value problem in {Hilbert} space},
     journal = {Mathematica Bohemica},
     pages = {347--358},
     publisher = {mathdoc},
     volume = {119},
     number = {4},
     year = {1994},
     doi = {10.21136/MB.1994.126123},
     mrnumber = {1316586},
     zbl = {0815.34059},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.1994.126123/}
}