Bartlow، Robert B.؛ Griffin، Steven T.؛ Williams، J. C. (2002). "Axial evolution of the negative glow in a hollow cathode discharge". Analytical Chemistry. ج. 64 ع. 22: 2751–2757. DOI:10.1021/ac00046a017. ISSN:0003-2700.
Bartlow، Robert B.؛ Griffin، Steven T.؛ Williams، J. C. (2002). "Axial evolution of the negative glow in a hollow cathode discharge". Analytical Chemistry. ج. 64 ع. 22: 2751–2757. DOI:10.1021/ac00046a017. ISSN:0003-2700.