Kossek, Tomasz, Dariusz Czułek, and Marcin Koba. 2016. “Long-Term Absolute Wavelength Stability of Acetylene-Stabilized Reference Laser at 1533 Nm”. Journal of Telecommunications and Information Technology 66 (4): 88-93. https://doi.org/10.26636/jtit.2016.4.766.