@article{GDZPPN002360209, title = {On power series and Mahler's U-numbers.}, journal = {Mathematica Scandinavica}, volume = {64}, year = {1989}, pages = {143-151}, zbl = {0706.11034}, url = {http://dml.mathdoc.fr/item/GDZPPN002360209} }
M.H., Oryan. On power series and Mahler's U-numbers.. Mathematica Scandinavica, Tome 64 (1989) pp. 143-151. http://gdmltest.u-ga.fr/item/GDZPPN002360209/