Add VOA to frequency list. Fix dependency on freq list.
.. -*- coding: utf-8 -*-
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Miscellaneous supplementary info.
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.. contents::
:local:
Well known free dictionaries.
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* `VOA <voa-special.pdf>`_ - Voice of America Public Domain English dictionary.
English.
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* `IPA conventions <IPA.html>`_.
* `English punctuation <en-punctuation.html>`_.
* `English pronunciation <en-pronunciation_ru.html>`_.
* `English affixes (suffixes/prefixes) <en-affixes.html>`_.
* `English pronunciation training exercise <en-pronunciation_en.html>`_.
* `English phrase examples <en-phrase-examples_ru.html>`_.