H. . Grelland, “Phenomenology and Physics. Hermann Weyl (1885-1955) .......... 127”, in Roman Ingarden and His Times, D. . Czakon, N. A. . Michna, and L. . Sosnowski , Eds. Poland: Księgarnia Akademicka Publishing, 2020. doi: 10.12797/9788381382106.08.