The EMF zip file was obtained from:

http://www.eclipse.org/downloads/download.php?file=/modeling/emf/emf/downloads/drops/2.7.x/M201201231045/emf-xsd-SDK-M201201231045.zip
http://www.eclipse.org/downloads/download.php?file=/modeling/emf/emf/downloads/drops/2.9.1/R201309020605/emf-xsd-SDK-2.9.1.zip
http://www.eclipse.org/downloads/download.php?file=/modeling/emf/emf/downloads/drops/2.9.1/R201309020605/emf-xsd-Update-2.9.1.zip

The zip file includes the sources.