@article{MZ_1987__194_173815,
     author = {Pavel Krejci},
     title = {Periodic {Solutions} to a {Parabolic} {Equation} with {Hysteresis.}},
     journal = {Mathematische Zeitschrift},
     pages = {61--70},
     publisher = {mathdoc},
     volume = {194},
     year = {1987},
     zbl = {0624.35043},
     url = {http://geodesic.mathdoc.fr/item/MZ_1987__194_173815/}
}