@article{10_4064_aa122_2_4,
     author = {Vichian Laohakosol and Narakorn Rompurk},
     title = {A characterization of rational elements
 by {L\"uroth-type} series expansions in the $p$-adic number field
 and in the field of {Laurent} series over a finite field},
     journal = {Acta Arithmetica},
     pages = {195--205},
     publisher = {mathdoc},
     volume = {122},
     number = {2},
     year = {2006},
     doi = {10.4064/aa122-2-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa122-2-4/}
}