@article{10_1090_S0894_0347_2011_00714_5,
     author = {Chang, Chieh-Yu and Papanikolas, Matthew},
     title = {Algebraic independence of periods and logarithms of {Drinfeld} modules},
     journal = {Journal of the American Mathematical Society},
     pages = {123--150},
     publisher = {mathdoc},
     volume = {25},
     number = {1},
     year = {2012},
     doi = {10.1090/S0894-0347-2011-00714-5},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-2011-00714-5/}
}