1. A. Alcisto, A. Enriquez, H. Garcia, S. Hinkson, T. Steelman, E. Silverman, P. Valdovino, H. Gigerenzer, J. Foyos, J. Ogren, J. Dorey, K. Karg, T. McDonald and O. S. Es-Said, J. Mater. Eng. Perform. 20 (2), 203 (2011).
2. D. C. Hohnann, S. Roherts, R. Otis, J. Kolodziejska, R. P. Dillon, Jong-ook Suh, A. A. Shapiro, Zi-kui Liu, and L.-P. Borgonia, Sci. Rep. 4 (5357), 1 (2014).
3. G. K. Lewis and E. Schlienger, Mater. Des. 21 (4), 417 (2000).
4. K. M. B. Taminger and R. A. Hafley, Electron Beam Freeform Fabrication: A Rapid Metal Deposition Process (Arch, 2003).
5. P. M. Sequeira Almeida and S. Williams, in Proc. 21st Annual Int. Solid Freeform Fabrication Symposium: An Additive Manufacturing Conference (Univ. of Texas, Austin, TX, 2010).