What is the 'implied resource pattern'?
The phrase 'implied resource pattern' describes the way
WS-Addressing is used to associate a stateful resource
with the execution of message exchanges implemented by
a Web service.

A WS-Addressing EndpointReference that follows the implied
resource pattern must include a ReferenceProperties child
element that identifies the resource to be associated with
the execution of all message exchanges performed using this
EndpointReference.

A Web services message that follows the implied resource
pattern must be sent to a Web service referred to by an
EndpointReference that follows the implied resource pattern,
and must include the ReferenceProperties information from
that EndpointReference, as specified by WS-Addressing.

A Web service that follows the implied resource pattern
must use the ReferenceProperties information from a
message that follows the implied resource pattern in
order to identify the resource to associate with the
execution requested by that message.

Source: http://www.globus.org/wsrf/faq.asp#wsrf12

When a stateful resource participates in the implied
resource pattern, we refer to it as a WS-Resource.

Source: http://www-106.ibm.com/developerworks/library/ws-resource/ws-modelingresources.html