%0 Journal Article %A Lourdes Juan %A Andy R. Magid %T Differential ‘Galois’ extensions with new constants %J Comptes Rendus. Mathématique %D 2010 %P 487-490 %V 348 %N 9-10 %I Elsevier %R 10.1016/j.crma.2010.04.004 %G en %F CRMATH_2010__348_9-10_487_0