EP1928880A1 - CRYSTALLINE FORMS OF [(1R), 2S]-2-AMINOPROPIONIC ACID 2-[4-(4-FLUORO-2-METHYL-1H-INDOL-5-YLOXY)-5-METHYLPYRROLO[2,1-F][1,2,4]TRIAZIN-6-YLOXY]-1-METHYLETHYL ESTER