Small arguable modifications
Merge remote-tracking branch 'bruno/feature/paper'

Conflicts:
	doc/papers/LUniv/univalent.tex
Replace LNCS bib style file by the last version
Conclusion and other improvements
First "complete" paper
Improved definitions
Add LowerUnivalent as delete enhancement algorithm
Add lines to the last algo

making it readable.
Clean charts
Move the full algorithm to its place
Improve English
Merge commit 'dbe388d3973c7e003c9cd2b562a2dc68d4651e24' into feature/paper

* commit 'dbe388d3973c7e003c9cd2b562a2dc68d4651e24':
  Improve English
  Move the full algorithm to its place
  Clean charts
  Add lines to the last algo
  Add LowerUnivalent as delete enhancement algorithm
  Improved definitions
  First "complete" paper
  Conclusion and other improvements
  Replace LNCS bib style file by the last version
  Small arguable modifications