Whispering gallery method of measuring complex permittivity in highly anisotropic materials: discovery of a new type of mode in anisotropic dielectric resonators. - Michael E. Tobar; John G. Hartnett; Eugene N. Ivanov; Pierre Blondy; Dominique Cros (IEEE Trans. Instrum. Meas., 2001)

Optical Frequency Synthesis From a Cryogenic Sapphire Oscillator Using a Fiber-Based Frequency Comb. - Ken-ichi Watabe; Hajime Inaba; Ken'ichiro Okumura; Feng-Lei Hong; John G. Hartnett; Clayton R. Locke; Giorgio Santarelli; Shinya Yanagimachi; Kaoru Minoshima; Takeshi Ikegami; Atsushi Onae; Shin-ichi Ohshima; et al. (IEEE Trans. Instrum. Meas., 2007)

Simplified Three-Cornered-Hat Technique for Frequency Stability Measurements. - Lachlan J. Gunn; Peter G. Catlow; Waddah A. Al-Ashwal; John G. Hartnett; Andrew Allison; Derek Abbott (IEEE Trans. Instrum. Meas., 2014)

Preliminary Evaluation of the Cesium Fountain Primary Frequency Standard NMIJ-F2. - Akifumi Takamizawa; Shinya Yanagimachi; Takehiko Tanabe; Ken Hagimoto; Iku Hirano; Ken-ichi Watabe; Takeshi Ikegami; John G. Hartnett (IEEE Trans. Instrum. Meas., 2015)

The Vector Algebra War: A Historical Perspective. - James M. Chappell; Azhar Iqbal; John G. Hartnett; Derek Abbott (IEEE Access, 2016)

Drift-Compensated Low-Noise Frequency Synthesis Based on a cryoCSO for the KRISS-F1. - Myoung-Sun Heo; Sang Eon Park; Won-Kyu Lee; Sang-Bum Lee; Hyun-Gue Hong; Taeg Yong Kwon; Chang Yong Park; Dai-Hyuk Yu; Giorgio Santarelli; Ashby Paul Hilton; Andre Nicholas Luiten; John Gideon Hartnett (IEEE Trans. Instrum. Meas., 2017)

Operating Atomic Fountain Clock Using Robust DBR Laser: Short-Term Stability Analysis. - Sangmin Lee; Myoung-Sun Heo; Taeg Yong Kwon; Hyun-Gue Hong; Sang-Bum Lee; Ashby Paul Hilton; Andre Nicholas Luiten; John Gideon Hartnett; Sang Eon Park (IEEE Trans. Instrum. Meas., 2017)