I'd start with koma-script. Use Book or report.
Look at this post which passed recently:
Re: Layout for Jura / Law PhD Thesis
http://permalink.gmane.org/gmane.editors.lyx.general/40745
Any the link there gives you a idea:
http://fkurth.de/uwest/usti/Diplom/
- Face page must have:
- Title
- Author
- Doctural thesis made in Bla bla University of bla bla
- Professors that oriented the project
This one is easy.
Title => environment "title"
Author => author
Doctural thesis made in Bla bla University of bla bla AND Professors
that oriented the project => publishers, hit CTRL+ENTER each time you
want a new line and all will go in the same environment.
- Quotations must be (Author, year, page)
I do this kind with Natbib which can be choosen in document settings.
For each citation enter the pages in the box for "text, after"
- There must be three Abstract pages (one in Portuguese, other in
English and other in French)
Did you try a new page in the abstract environment?
Good luck. Don't be shy to come back for more questions.
Tim