+span.ref { } /* Citations (Rs). */
+span.ref-auth { } /* Reference author (%A). */
+span.ref-book { font-style: italic; font-weight: normal; } /* Reference book (%B). */
+span.ref-city { } /* Reference city (%C). */
+span.ref-date { } /* Reference date (%D). */
+span.ref-issue { font-style: italic; font-weight: normal; } /* Reference issuer/publisher (%I). */
+span.ref-jrnl { font-style: italic; font-weight: normal; } /* Reference journal (%J). */
+span.ref-num { } /* Reference number (%N). */
+span.ref-opt { } /* Reference optionals (%O). */
+span.ref-page { } /* Reference page (%P). */
+span.ref-corp { } /* Reference corporate/foreign author (%Q). */
+span.ref-rep { } /* Reference report (%R). */
+span.ref-title { text-decoration: underline; } /* Reference title (%T). */
+span.ref-vol { } /* Reference volume (%V). */
+span.roman { font-style: normal; font-weight: normal; } /* Generic font. */
+span.small { font-size: smaller; } /* Generically small (SB, SM). */
+span.symb { font-weight: bold; font-style: normal; } /* Symbols. */
+span.type { font-style: italic; font-weight: normal; } /* Variable types (Vt). */