I found this blog entry interesting.
This article seemed pretty interesting too.
This too seems like a pretty cool reference.
You may also find this one interesting as well.
So is this one.
This one from 1999 is pretty good too.
Nice one here.
You have to scroll all the way down to the bottom of the page to find this one.
As a person who suffers greatly from sinus infections and frequent temporary anosmia, I thought it would be helpful to explain why someone would use left/right nostril techniques to evaluate perfumery materials. It's also extensively used in wine evaluations and has been for years.
They're also just great references.