1. S. Grasso, Y. Sakka, G. Maizza, Electric current activated/assisted sintering (ECAS): a review of patents 1906–2008. Sci. Technol. Adv. Mater. 10(5), 1–24 (2009)
2. Lux J, Improved manufacture of electric incandescent lamp filaments from tungsten or molybdenum or an alloy thereof. GB Patent 27002 (1906)
3. Weintraub G, Rush H, Process and apparatus for sintering refractory materials. U.S. Patent 1071488A (1913)
4. Taylor GF, Apparatus for making hard metal compositions. U.S. Patent 1896854 (1933)
5. F.V. Lenel, Resistance sintering under pressure. Journal of Materials 7(1), 158–167 (1955)