http://www.tesisenred.net/bitstream/handle/10803/22665/0de5.MABAprevio_cap1.pdf?sequence=1
http://www.tesisenred.net/bitstream/handle/10803/22665/1de5.MABAcap2.pdf?sequence=2
http://www.tesisenred.net/bitstream/handle/10803/22665/2de5.MABAcap3.pdf?sequence=3
http://www.tesisenred.net/bitstream/handle/10803/22665/3de5.MABAcap4.pdf?sequence=4
http://www.tesisenred.net/bitstream/handle/10803/22665/4de5.MABAcap5.pdf?sequence=5
http://www.tesisenred.net/bitstream/handle/10803/22665/5de5.MABAconclusiones_fuentes.pdf?sequence=6
