updated authors in manual.xml

(cherry picked from commit 3b1debf9)

doc/manual.xml

@@ -10,6 +10,12 @@
       <email>stephane.adjemian@ens.fr</email>
       <address><street>142 rue du Chevaleret</street><postcode>75013</postcode><city>Paris</city><country>France</country></address>
     </author>
+    <author>
+      <firstname>Houtan</firstname><surname>Bastani</surname>
+      <affiliation><orgname>CEPREMAP</orgname></affiliation>
+      <email>houtanb@gmail.com</email>
+      <address><street>142 rue du Chevaleret</street><postcode>75013</postcode><city>Paris</city><country>France</country></address>
+    </author>
     <author>
       <firstname>Michel</firstname><surname>Juillard</surname>
       <affiliation><orgname>Banque de France and CEPREMAP</orgname></affiliation>
@@ -28,6 +34,12 @@
       <email>george@perendia.orangehome.co.uk</email>
       <address><street>142 rue du Chevaleret</street><postcode>75013</postcode><city>Paris</city><country>France</country></address>
     </author>
+    <author>
+      <firstname>Marco</firstname><surname>Ratto</surname>
+      <affiliation><orgname>The European Commission, Joint Research Centre and CEPREMAP</orgname></affiliation>
+      <email>marco.ratto@jrc.ec.europa.eu</email>
+      <address><street>142 rue du Chevaleret</street><postcode>75013</postcode><city>Paris</city><country>France</country></address>
+    </author>
     <author>
       <firstname>Sébastien</firstname><surname>Villemot</surname>
       <affiliation><orgname>CEPREMAP</orgname></affiliation>