2015 · Yoshitaka Ametani, Mayumi Aoki, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 45
2012 · H. Nagatomo, K. Kukita, et al. · Journal of Vacuum Science & Technology B Nanotechnology and Microelectronics Materials Processing Measurement and Phenomena · 2