Exemplo:
[#] R. E. Haskell e C. T. Case, “Transient signal propagation in lossless isotropic plasmas”, USAF Cambridge Res. Labs., Cambridge, MA, USA, Rep. ARCRL-66-234 (II), 1994.
Exemplo:
[#] G. Glass, "Electrical safety program: Nonelectrical crafts at LANL, Live #12175", Los Alamos National Lab. (LANL), Los Alamos, NM, USA, LA-UR--16-29637, 2016. Consultado: 14 abril de 2021. [En liña]. Dispoñible en: https://www.osti.gov/biblio/1338684-electrical-safety-program-nonelectrical-crafts-lanl-live