TY - Front. Phys. A1 - Zbigniew Tylczyński T1 - Supplement to the paper “A collection of 505 papers on false or unconfirmed ferroelectric properties in single crystals, ceramics and polymers [Front. Phys. 14(6), 63301 (2019)]” Y1 - 2021-10-15 JF - Frontiers of Physics JO - Front. Phys. SP - 53001 EP - VL - 16 IS - 5 UR - https://journal.hep.com.cn/fop N1 - 10.1007/s11467-021-1050-4 ER -