needed to know how lexbfs algorithm works

I needed to know how lexbfs algorithm works in graphs. Any introductry tutorials lessons would be help
ssami81Asked:
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MereteConnect With a Mentor Commented:
hello ssami81  no one has offered you any assistance, I have no xperience with this topic but oneway I learnt was to use a search engine and of course experst exchange.
http://toolbar.google.com/

I just googled these, so make no claim as my own.. hope it assists you,

A lexBFS algorithm for proper interval graph recognition. ... The algorithm works by comparing the curvature-encoded fragment outlines

This is the text version lexbfs  algorithm  
http://64.233.167.104/search?q=cache:mHdsjPjf1YMJ:www.liafa.jussieu.fr/~habib/Documents/cograph.ps+lexbfs+algorithm&hl=en&ct=clnk&cd=10&gl=au
it is an Adobe Post script.
 A Simple Linear Time LexBFS Cograph Recognition Algorithm
http://www.liafa.jussieu.fr/~habib/Documents/cograph.ps

Graph extremities and minimal separation 1 Introduction
http://www.isima.fr/berry/JIMinvited.ps

Graph-theoretic algorithms
http://www.student.cs.uwaterloo.ca/~cs762/Notes/book.pdf

A lexBFS Algorithm for Proper Interval Graph Recognition (1993)
http://citeseer.ist.psu.edu/68711.html
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