GouraudDirectional (EX9.Effect)

Nowhere can not find a node GouraudDirectional (EX9.Effect). It is said that he should be in addon pack, but it’s not there. Tell me, where can I get this node. Thank you in advance.

this node comes with core vvvv. simply doubleclick in a patch to bring up the nodebrowser and type “gour…” to see it.