diff --git a/backend/genesys.c b/backend/genesys.c
index 85c32d750..89c5ae76f 100644
--- a/backend/genesys.c
+++ b/backend/genesys.c
@@ -6,6 +6,8 @@
    Copyright (C) 2005-2009 Pierre Willenbrock <pierre@pirsoft.dnsalias.org>
    Copyright (C) 2006 Laurent Charpentier <laurent_pubs@yahoo.com>
    Copyright (C) 2007 Luke <iceyfor@gmail.com>
+   Copyright (C) 2010 Chris Berry <s0457957@sms.ed.ac.uk> and Michael Rickmann <mrickma@gwdg.de>
+                 for Plustek Opticbook 3600 support
 
    Dynamic rasterization code was taken from the epjistsu backend by
    m. allan noah <kitno455 at gmail dot com>
diff --git a/backend/genesys_devices.c b/backend/genesys_devices.c
index a1d6e742b..dce0c8d08 100644
--- a/backend/genesys_devices.c
+++ b/backend/genesys_devices.c
@@ -9,6 +9,8 @@
    Copyright (C) 2010 Jack McGill <jmcgill85258@yahoo.com>
    Copyright (C) 2010 Andrey Loginov <avloginov@gmail.com>,
    		xerox travelscan device entry
+   Copyright (C) 2010 Chris Berry <s0457957@sms.ed.ac.uk> and Michael Rickmann <mrickma@gwdg.de>
+                 for Plustek Opticbook 3600 support
    
    This file is part of the SANE package.
    
diff --git a/backend/genesys_gl841.c b/backend/genesys_gl841.c
index 2c152cd14..b713dbe74 100644
--- a/backend/genesys_gl841.c
+++ b/backend/genesys_gl841.c
@@ -3,10 +3,12 @@
    Copyright (C) 2003 Oliver Rauch
    Copyright (C) 2003, 2004 Henning Meier-Geinitz <henning@meier-geinitz.de>
    Copyright (C) 2004 Gerhard Jaeger <gerhard@gjaeger.de>
-   Copyright (C) 2004, 2009 Stephane Voltz <stef.dev@free.fr>
+   Copyright (C) 2004-2010 Stephane Voltz <stef.dev@free.fr>
    Copyright (C) 2005 Philipp Schmid <philipp8288@web.de>
-   Copyright (C) 2005 - 2009 Pierre Willenbrock <pierre@pirsoft.dnsalias.org>
+   Copyright (C) 2005-2009 Pierre Willenbrock <pierre@pirsoft.dnsalias.org>
    Copyright (C) 2006 Laurent Charpentier <laurent_pubs@yahoo.com>
+   Copyright (C) 2010 Chris Berry <s0457957@sms.ed.ac.uk> and Michael Rickmann <mrickma@gwdg.de>
+                 for Plustek Opticbook 3600 support
    
     
    This file is part of the SANE package.