@misc{indiciae1570945b7060, title = {Molecular orbital (SCF-X-α-SW) theory of Fe 2+- Mn 3+ , Fe 3+- Mn 2+ , and Fe 3+- Mn 3+ charge transfer and magnetic exchange in oxides and silicates}, author = {David M. Sherman}, year = {1990}, url = {https://pubs.usgs.gov/publication/70016192}, note = {Source identifier: 70016192} }