Literature
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- Brom, T. G. 1991a. The diagnostic and phylogenetic significance of feather structures. Published thesis, University of Amsterdam.
- Chandler, A. C. 1916. A study of the structure of feathers, with reference to their taxonomic significance. University of California publications in zoology vol. 13: 243-446.
- Day, M. G. 1966. Identification of hair and feather remains in the gut and faeces of stoats and weasels. Journal of Zoology 148: 201-217.
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- Shamoun, J. and Y. Yom-Tov [ 1996b. ]. Addition to The Microstructure of Feathers of Israeli Birds. Publ. Tel Aviv University, 79 pp.