1. K. Fujita, Hilbert spaces related to harmonic functions. Tôhoku Math. J. 48, 149–163 (1996). https://doi.org/10.2748/tmj/1178225416
2. K. Fujita, Gabor transformation on the circle, in Proceedings of the 2014 International Conference on Wavelet Analysis and Pattern Recognition, (2014), pp. 122–126. https://doi.org/10.1109/ICWAPR.2014.6961302
3. K. Fujita, On an inverse transformation of the Gabor transformation on the sphere, in Proceedings of the Seventh International Conference on Information, Information (2015), pp. 45–48. ISBN 4-901329-08-1
4. K. Fujita, Gabor transform of analytic functional on the sphere, in Proceedings of the 9th ISAAC Congress Current Trends in Analysis and its Applications, Kraków, 2013 (Springer International Publishing, Berlin, 2015), pp. 451–458. https://doi.org/10.1007/978-3-319-12577-0_50
5. K. Fujita, Gabor transformation on the Sphere and its inverse transformation, in Proceedings of the 10th ISAAC Congress New Trends in Analysis and Interdisciplinary Applications, Trends in Mathematics (Springer International Publishing, Berlin, 2017), pp. 573–580. https://doi.org/10.1007/978-3-319-48812-7_72