On Exceptional Times for Pointwise Convergence of Integral Kernels in Feynman–Trotter Path Integrals H. G. Feichtinger, F. Nicola, S. I. (springer Indam Series) Trapasso (2021) On Exceptional Times for Pointwise Convergence of Integral Kernels in Feynman–Trotter Path Integrals, In: Springer INdAM Series, pp. 293-311, ISBN: 978-3-030-61345-7