@article{ARM_1969__5_3_a0,
     author = {Arscott, Felix M. and Wright, G. P.},
     title = {Floquet theory for doubly-periodic differential equations},
     journal = {Archivum mathematicum},
     pages = {111--124},
     publisher = {mathdoc},
     volume = {05},
     number = {3},
     year = {1969},
     mrnumber = {0330573},
     zbl = {0235.34053},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1969__5_3_a0/}
}