@article{AFST_2010_6_19_S1_37_0,
     author = {Delzell, Charles N.},
     title = {Extension of the {Two-Variable} {Pierce-Birkhoff} conjecture to generalized polynomials},
     journal = {Annales de la Facult\'e des sciences de Toulouse : Math\'ematiques},
     pages = {37--56},
     publisher = {Universit\'e Paul Sabatier, Institut de math\'ematiques},
     address = {Toulouse},
     volume = {Ser. 6, 19},
     number = {S1},
     year = {2010},
     doi = {10.5802/afst.1274},
     mrnumber = {2675720},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/afst.1274/}
}