
<html>

  <head>


    <meta http-equiv="content-type" content="text/html; charset=utf-8">

  </head>

  <body text="#000000" bgcolor="#FFFFFF">

    <a

href="http://www.sciencedirect.com/science/article/pii/S1047847717300588"><img

        moz-do-not-send="false"

        src="cid:part1.EBC83B3B.43BFC7FF@subangstrom.com" alt=""

        height="849" width="653" border="0"></a><a

href="http://www.sciencedirect.com/science/article/pii/S1047847717300588"><img

        moz-do-not-send="false"

        src="cid:part3.F0B4BB71.5D64CC91@subangstrom.com" alt=""

        height="848" width="658" border="0"></a><a

href="http://www.sciencedirect.com/science/article/pii/S1047847717300588"><img

        moz-do-not-send="false"

        src="cid:part5.25844E06.1510C3C2@subangstrom.com" alt=""

        height="850" width="659" border="0"></a>

  </body>

</html>