1. J. Kawai, Fundamentals of Heat and Mass Transfer. Maruzen (2005). ISBN 978–4–621–07608–8, eBook is also available from the publisher.
2. D.J. Amit, Y. Verbin, Statistical Physics, An Introductory Course. World Scientific (1999), p. 9.
3. K. Ohta, Introduction to Electrodynamics II. Maruzen (2000), pp. 385–387.
4. H. Ishii, J. Kawai, SEM-EDX with an SDD X-ray detector installed onto the scanning electron microscope. Adv. X-Ray Chem. Anal. Jpn 37, 281–288 (2006). https://www.researchgate.net/publication/284049134
5. J. Kawai, H. Ishii, Comparison between blackbody radiation and continuous X-ray spectra produced by electron deceleration. Radiat. Phys. Chem. 75(11), 1716–1718 (2006). https://doi.org/10.1016/j.radphyschem.2005.12.046