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| Korsakov, Andrey V., Olga V. Rezvukhina, John A. Jaszczak, Dmitriy I. Rezvukhin, and Denis S. Mikhailenko. (2019) "Natural Graphite Cuboids" Minerals 9, no. 2: 110. https://doi.org/10.3390/min9020110 Thompson, Woodrow B., Bearss, Gene T., Falster, Alexander U., Simmons, William B., Nizamoff, Jams W. (2000) The Estes Quarry, Cumberland County, Maine: A New Pegmatite Mineral Locality. Rocks & Minerals, 75 (6) 408-418 doi:10.1080/00357520009605667 |
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