References
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- Farr JPG: Trans. Inst. Met. Fin., 2008, 86, (2), 82.
- Hansal W: Trans. Inst. Met. Fin., 2008, 86, (5), 249–250.
- Farr JPG: Trans. Inst. Met. Fin., 2010, 88, (4), 177.
- Farr JPG: Trans. Inst. Met. Fin., 2012, 90, (3), 114–116.