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	<formalpara>

		<title>About the authors</title>

    <para>Filippo Rusconi is a senior research scientist at the French national
    research council (<foreignphrase>Centre national de la Recherche
    scientifique</foreignphrase>, <acronym>CNRS</acronym>). Filippo has a
    background in biochemistry and organic chemistry and was trained during his
      Ph.D. as a bioanalytical chemist. He has extensive knowledge of analytical
      techniques involved in the study of biopolymers.</para>

	</formalpara>

		<para>Filippo Rusconi is the author of a handbook about mass spectrometry
			for biochemists (French). The book was published by the French sci/tech
			publisher <link xlink:href="https://www.lavoisier.fr">Lavoisier</link>.
		</para>	

	<formalpara>

		<title>Colophon</title>

		<para>The look of this book (<acronym>PDF</acronym> file) is the result of
			me having read many books from the O'Reilly publisher.</para>

	</formalpara>

		<para>The frog on the book title page is a frog from Papua. This frog is
			able to hover when performing downwards leaps. This picture is courtesy
			<link xlink:href="http://www.papuaweb.org"/></para>

		<para>The typesetting of the book has been done on a Debian GNU/Linux
			computer using only Free Software. Use of the DocBook Authoring and
			Publishing Suite (<link
				xlink:href="https://github.com/openSUSE/daps">DAPS</link>) from SUSE was
			key in the process.</para>

		<para>The layout adopted for this book is an adaptation of the SUSE
			stylesheets.  I would like to thank Frank Sundermeyer
			&lt;fsundermeyer@opensuse.org&gt; and Stefan Knorr &lt;sknorr@suse.de&gt;
			for being helpful with all my questions.</para>

		<para> The main font used was <link
				xlink:href="https://github.com/georgd/EB-Garamond">EBGaramond</link> and
			the symbol/mathematical font was from the <link
				xlink:href="https://www.stixfonts.org/">STIX project</link> (font:
			STIX2Math).</para> 

		<para>The screen shots were taken with Spectacle, the screen capture program
			shipped along with my <link xlink:href="https://www.kde.org/">KDE</link>
			desktop environment and resampled using The GNU image manipulation program
			<link xlink:href="https://www.gimp.org/">The Gimp</link>. Illustrations
			were done in <link xlink:href="https://inkscape.org/">Inkscape</link>, a
			vectorial drawing software.</para>

</colophon>


