@article{02217534, title = {Periodic boundary value problems on time scales.}, journal = {Advances in Difference Equations [electronic only]}, volume = {2005}, year = {2005}, pages = {81-92}, doi = {10.1155/ADE.2005.81}, zbl = {1081.39016}, language = {en}, url = {http://dml.mathdoc.fr/item/02217534} }
Stehlík, Petr. Periodic boundary value problems on time scales.. Advances in Difference Equations [electronic only], Tome 2005 (2005) pp. 81-92. doi : 10.1155/ADE.2005.81. http://gdmltest.u-ga.fr/item/02217534/