http://leto.net/writing/nasm.php  
http://r00tsecurity.org/forums/topic/13810-linux-x86-nasm-open-read-write-syscalls/
http://www.cin.ufpe.br/~if817/arquivos/asmtut/syscalls.html
http://en.wikibooks.org/wiki/X86_Assembly/NASM_Syntax
http://www.cin.ufpe.br/~if817/arquivos/asmtut/quickstart.html#cmdarg_file
http://www.cin.ufpe.br/~if817/arquivos/asmtut/index.html#manpages
https://docs.google.com/a/cin.ufpe.br/viewer?a=v&pid=sites&srcid=Y2luLnVmcGUuYnJ8aWY2Nzd8Z3g6MWNjZmUyOTFlYzAwMGYwNw&pli=1
http://richard.jp.leguen.ca/not-blog/nasm-programming-for-soen228