Inserting another document in Lyx

[Jean-Michel Bouffard]

I'm writing a research paper and I'd like to include a specification that I
have in the HTML format. Is there a way to insert this html document at the
end of my Lyx document in the Appendices section.

I thought that I could convert this html in something else, like pdf or ps
but I still don't know how I could insert these other types of document into
my Lyx paper.

Thanks.

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J-M