Comparison of high-frequency AC-DC voltage transfer standards at NRC, VSL, PTB, and NIST. - Piotr S. Filipski; Cees J. van Mullem; David Janik; Manfred Klonz; Joseph R. Kinard; Thomas E. Lipe; Bryan C. Waltrip (IEEE Trans. Instrum. Meas., 2001)

High-frequency thin-film multijunction thermal converter on a quartz crystal chip. - Luciana Scarioni; Manfred Klonz; David Janik; Héctor Laiz; Marian Kampik (IEEE Trans. Instrum. Meas., 2003)