Companion planting resources?

I am having real troubles finding a reliable and expansive text or resource on companion planting in Australia. There are no shortage of blogs telling you about this or that plant, but I'm looking for exhaustive data I can use for laying out beds and deciding on a plan for my entire food forest to be. Any suggestions?

Thanks!

Mark

Not a bad resource...
http://en.wikipedia.org/wiki/List_of_companion_plants

Thanks very much for the resource!