Mathematical Inequalities & Applications · Volume 22, Issue 1 Directional Heisenberg uncertainty product 22-28 Pages 377-399 DOI 10.7153/mia-2019-22-28 Downloads Short PDF Full PDF PNG Authors A. Krivoshein E. Lebedeva E. Neiman J. Prestin Keywords time-frequency localization uncertainty product multivariate functions Subject classes 26D10 26D15 42B10