@article{ZNSL_2008_358_a1,
     author = {A. B\`es and P. C\'egielski},
     title = {Non-maximal decidable structures},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {23--37},
     publisher = {mathdoc},
     volume = {358},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2008_358_a1/}
}