Ananthanarayanan, N. I.; Peavler, R. J. (1961). "A New Reversible Solid-State Transformation in Iron–Nickel Alloys in the Invar Range of Compositions". Nature. 192 (4806): 962–963. Bibcode:1961Natur.192..962A. doi:10.1038/192962a0.
Ananthanarayanan, N. I.; Peavler, R. J. (1961). "A New Reversible Solid-State Transformation in Iron–Nickel Alloys in the Invar Range of Compositions". Nature. 192 (4806): 962–963. Bibcode:1961Natur.192..962A. doi:10.1038/192962a0.