<p>There is a large number of questions asking for recommendations of textbooks and material on these fields. Unsurprisingly, given the language of this site and most of its audience, resources are limited to material in English.</p>
<p>I would assume there must be a breadth of untranslated material from countries with a mathematical tradition (such as <strong>French</strong> or <strong>Russian</strong>) that is never mentioned in these threads. (<em>I am personally interested on French and Spanish sources but I'd rather have this open-question be a general repository for <strong>any language</strong>.</em>) Thus:</p>
<h2>Which non-English hidden gems could you recommend for (self?-)studying mathematical or theoretical statistics or probability?</h2>
