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We show that the usage of the classical Fisher metric on phase space probability representation of quantum states gives the same qualitative results with respect to different versions of the quantum Fisher metric.<\/jats:p>","DOI":"10.3390\/e20020146","type":"journal-article","created":{"date-parts":[[2018,2,27]],"date-time":"2018-02-27T03:36:12Z","timestamp":1519702572000},"page":"146","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["The Volume of Two-Qubit States by Information Geometry"],"prefix":"10.3390","volume":"20","author":[{"given":"Milajiguli","family":"Rexiti","sequence":"first","affiliation":[{"name":"School of Advanced Studies, University of Camerino, 62032 Camerino, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Domenico","family":"Felice","sequence":"additional","affiliation":[{"name":"Max Planck Institute for Mathematics in the Sciences, Inselstrasse 22-04103 Leipzig, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefano","family":"Mancini","sequence":"additional","affiliation":[{"name":"School of Science and Technology, University of Camerino, 62032 Camerino, Italy"},{"name":"INFN-Sezione di Perugia, I-06123 Perugia, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2018,2,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"865","DOI":"10.1103\/RevModPhys.81.865","article-title":"Quantum entanglement","volume":"81","author":"Horodecki","year":"2009","journal-title":"Rev. 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