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Taking time reversal into account there are 122 crystallographic Shubnikov point groups and 21 limiting Shubnikov point groups containing ∞-fold rotation axes. The restrictions on the form of the tensor describing the piezomagnetoelectric effect are given for all these groups and compared with results of other authors. Antiferromagnetic materials with non-centrosymmetric point groups containing space-time inversion are suitable candidates for measuring the piezomagnetoelectric effect.
