Morgenstierne, Georg (1926) Report on a Linguistic Mission to Afghanistan. Institute for Comparative Research in Human Culture, Serie C I-2. Oslo. ISBN 0-923891-09-9
Morgenstierne, Georg (1938) Indo-Iranian Frontier Languages II (Yidgha-Munji, Sanglechi-Ishkashmi and Wakhi). Institute for Comparative Research in Human Culture, Serie B: XXXV. Oslo.