Ari Maunu
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(2018). Necessary a posteriori identity truths: Fregeanism beats direct reference theory. Axiomathes, 28 (1), 73-80. https://doi.org/10.1007/s10516-017-9332-8.
(2004). Leibnizian soft reduction of extrinsic denominations and relations. Synthese, 139 (1), 143-164. https://doi.org/10.1023/B:SYNT.0000021310.53938.ad.