TY - Front. Phys. A1 - Hong-Yi Fan, Jun-Hua Chen T1 - On the core of the fractional Fourier transform and its role in composing complex fractional Fourier transformations and Fresnel transformations Y1 - 2015-02-10 JF - Frontiers of Physics JO - Front. Phys. SP - 100301 EP - VL - 10 IS - 1 UR - https://journal.hep.com.cn/fop N1 - 10.1007/s11467-014-0445-x ER -