Kurata , Narito. “Sensor Device Capable of Autonomously Keeping Accurate Time Information Using a Chip Scale Atomic Clock for Earthquake Observation and Structural Health Monitoring of Buildings”. Research Developments in Science and Technology Vol. 2 (April 22, 2022): 82–100. Accessed June 3, 2026. https://stm.bookpi.org/RDST-V2/article/view/6607.