1. ISO/ASTM Standard 52921, 2013, ASTM International, West Conshohocken, PA, 2013.
2. M. Svensson: Arcam AB, Molndal Sweden, unpublished research, 2011.
3. M. Svensson: Arcam AB, Molndal Sweden, unpublished research, 2012.
4. B.S. Bass: North Carolina State University, Raleigh, North Carolina, unpublished research 2008.
5. H.K. Rafi, N.V. Karthik, T.L. Starr, and B.E. Stucker: Solid Freeform Fabr. Symp. Proc., 2012, vol. 22, pp. 526–35.