 NDL India: C_9 Helices And Ribbons In gamma-Peptides: Crystal Structures Of Gabapentin OligomersC_9 Helices And Ribbons In gamma-Peptides: Crystal Structures Of Gabapentin Oligomers C_9 Helices And Ribbons In gamma-Peptides: Crystal Structures Of Gabapentin OligomersAuthor Vasudev, Prema G. Shamala, Narayanaswamy Ananda, Kuppanna Balaram, Padmanabhan 