@article{ZNSL_1993_206_a6,
     author = {A. A. Kotsiolis},
     title = {smooth periodic solutions of the penalized {Maxwell} equations},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {85--90},
     publisher = {mathdoc},
     volume = {206},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1993_206_a6/}
}