Russo Krauss, Chiara. 2020. From Empiriocriticism to Relativistic Positivism. Joseph Petzoldt Between Ernst Mach’s and Richard Avenarius’ Legacy and the Debate about Einstein’s Relativity. Vol. 16. FedOAPress - School of Human and Social Sciences. Working Papers. SHARE Books. https://www.fedoabooks.unina.it/index.php/fedoapress/catalog/book/181.