Polyatomic ultralong-range Rydberg molecules in external fields - Aguilera-Fernandez, Javier; Gonzalez-Ferez, Rosario; Diaz, C; Rabadan, I; Garcia, G; Mendez, L; Martin, F (XXIX INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC, AND ATOMIC COLLISIONS (ICPEAC2015), PTS 1-12, 2015)