I think you meant Gunthorpe L, Cameron AM (1990a)?
This is still quite circumstantial evidence IMO... Again, I suspect chemical warefare does exist, but I'm not sure how common or under what circumstances. I think the refrence I provided, by Lages et al. is still probably the most convincing and informative I've seen so far...
This is a very facsinating topic, and I'll certainly keep looking for info and continue to read through the refrences from the AA article. I've been researching this on and off for some time and still havn't found any definitive refrences on the subject. However, I'm thrilled to see any info regardless, so thanks Mike
