@article{MASLO_1992__42_1_a5, author = {Rudolf, Boris}, title = {Periodic boundary value problem in {Hilbert} space for differential equation of second order with reflection of the argument}, journal = {Mathematica slovaca}, pages = {65--84}, publisher = {mathdoc}, volume = {42}, number = {1}, year = {1992}, mrnumber = {1159492}, zbl = {0744.34062}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1992__42_1_a5/} }