Ecogrow is the sole Australian supplier of nematodes and equipment for the control of sirex. Using methods developed by CSIRO, Ecogrow produces cultures of the  sirex nematode (Beddingia siricidola) for field inoculation in late Autumn.
http://www.ecogrow.com.au/
email: info@ecogrow.com.au
telephone: (02) 6284 3844

North American sirex activity can be found on the Sirex Working Group site below:
http://www.woodwasps.com/

Literature

A reference list of sirex-related literature originally compiled by Dr. Dennis Haugen and continually updated is available on the following website. Pdfs of several sirex publications are available.
http://www.fabinet.up.ac.za/index.php/sirex-literature