http://thesis.vt.edu/thesis1/ch2/seca directed cycled graph 
http://thesis.vt.edu/thesis3/ch2 mathematical calculation 
http://thesis.vt.edu/thesis1/ch2/secb directed acycled graph 
http://thesis.vt.edu/thesis2/ regular expression defination structure linux windows 
http://thesis.vt.edu/thesis2/ch2/seca regular expression structure 
http://thesis.vt.edu/thesis2/ch2/secb linux regular expression 
http://thesis.vt.edu/thesis1/ch2/secc tree structure 
http://thesis.vt.edu/thesis2/ch2/secc windows regular expression 
http://thesis.vt.edu/thesis3 approximation sorting mathematical calculation 
http://thesis.vt.edu/thesis2/ch1 defination regular expression structure linux windows 
http://thesis.vt.edu/thesis1/ch1 vertex-edge 
http://thesis.vt.edu/thesis1/ch2 graph theoery directed cycled acycled tree structure 
http://thesis.vt.edu/thesis3/ch1 approximation mathematical calculation 
http://thesis.vt.edu/thesis1.html graph theory longword vertex-edge theoery directed cycled acycled tree structure 
http://thesis.vt.edu virginia tech thesis graph theory longword vertex-edge theoery directed cycled acycled tree structure regular expression defination linux windows approximation sorting mathematical calculation