R help - Apr 2007 - nested logit model with random effects: variance components

Can somebody tell me, how I can estimate the both dispersion components
"within the occasions" and "between the occasions" regarding
the "Cell irradiation data" (see e.g.
http://ipb.ac.id/~anangk/download/(DH+AK)_ICoMS-1.pdf in section 4)with glmmPQL
in R? How does the algorithm look?

Kirstin


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