Thank you. This worked. But I found another problem
(related to #548?). I report it in a separate report.

The following source results an error (as shown below).
If I use \renewcommand{\rmdefault}{ptm}, this error
does not occur, but I have a problem with italics
in the literature section (ID #548).

%%%
\documentclass[12pt,a4paper]{article}

% \renewcommand{\rmdefault}{ptm}

\usepackage[OT2,T1]{fontenc}
\usepackage[english,russian]{babel}

\begin{document}

\textit{\selectlanguage{russian}ABV\selectlanguage{english} -- ABC}

\end{document}
%%%

The error is

org.xml.sax.SAXParseException; lineNumber: 42; columnNumber: 27; Invalid byte 1 of 1-byte UTF-8 sequence.
at java.xml/com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1244)
at java.xml/com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:635)
at java.xml/org.xml.sax.helpers.XMLFilterImpl.parse(XMLFilterImpl.java:357)
at xtpipes.Xtpipes.execute(Xtpipes.java:1300)
at xtpipes.Xtpipes.execute(Xtpipes.java:783)
at xtpipes.Xtpipes.mainMethod(Xtpipes.java:665)
at xtpipes.Xtpipes.main(Xtpipes.java:70)
at xtpipes.main(xtpipes.java:5)
Caused by: com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequenceException: Invalid byte 1 of 1-byte UTF-8 sequence.
at java.xml/com.sun.org.apache.xerces.internal.impl.io.UTF8Reader.invalidByte(UTF8Reader.java:702)
at java.xml/com.sun.org.apache.xerces.internal.impl.io.UTF8Reader.read(UTF8Reader.java:568)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.load(XMLEntityScanner.java:1699)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.peekChar(XMLEntityScanner.java:520)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2649)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:605)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:534)
at java.xml/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:888)
at java.xml/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:824)
at java.xml/com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at java.xml/com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1216)
... 7 more
--- xtpipes error 29 --- At <sax content-handler="xtpipes.util.ScriptsManager,tex4ht.OoFilter" lexical-handler="xtpipes.util.ScriptsManagerLH" > : While parsing file file:xxx.tmp: : org.xml.sax.SAXParseException; lineNumber: 42; columnNumber: 27; Invalid byte 1 of 1-byte UTF-8 sequence.