I believe the white book has a chapter on the topic.
HTH,
Andy
> From: Leonard Assis
>
> Where Can I Have More information about Formulae in R (Nesti8ng,
> Crossing Factors, Etc). I??ve tried to obtain this information
> in R Help
> and that source were a kind of inconclusive for my Doubts.
>
> []s
> Leonard Assis
> Estat??stico
> CONFE 7439
>
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