@article{10_1090_S0894_0347_03_00433_8,
     author = {Poonen, Bjorn},
     title = {Hilbert\^a€™s {Tenth} {Problem} and {Mazur\^a€™s} {Conjecture} for large subrings of \^a„š},
     journal = {Journal of the American Mathematical Society},
     pages = {981--990},
     publisher = {mathdoc},
     volume = {16},
     number = {4},
     year = {2003},
     doi = {10.1090/S0894-0347-03-00433-8},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-03-00433-8/}
}