Problem with services_views module and xmlrpc+python2.7

I am tying to get views data from Drupal vith Services. Services
module works well - I can recieve nodes, users and taxonomy. When I
make any request to services_views, I recieve:
xmlrpclib.Fault: <Fault 401: 'Missing required argument view_name'>
I tried to send a xml like this:

<?xml version='1.0'?>
<methodCall>
<methodName>views.retrieve</methodName>
<params>
<param>
<value><struct>
<member>
<name>view_name</name>
<value><string>service_view</string></value>
</member>
</struct></value>
</param>
</params>
</methodCall>

and like this:

<?xml version='1.0'?>
<methodCall>
<methodName>views.retrieve</methodName>
<params>
<param>
<value><string>service_view</string></value>
</param>
</params>
</methodCall>

with no luck. Can anybody give me an advice, how to make the right request, please?