Abstract
It is proved that a free product of two finite p-groups with amalgamated central subgroups is a conjugacy p-separable group. With the help of this result, it is proved that a free product with amalgamated subgroups of two finitely generated Abelian groups is a residually finite p-group if and only if it is conjugacy p-separable.
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Ivanova, E.A. On Conjugacy p-Separability of Free Products of Two Groups with Amalgamation. Mathematical Notes 76, 465–471 (2004). https://doi.org/10.1023/B:MATN.0000043476.39676.01
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DOI: https://doi.org/10.1023/B:MATN.0000043476.39676.01