Business cycle theory discussion

I understand general principles of Austrian business cycle theory which are briefly described in [wiki article](http://ift.tt/1fGSTbp). Actually this theory wasn't confirmed with empirical research or was even rejected. So I'm interested if there are any alternative business cycles theories which where confirmed by empirical researches? If yes, then what are their causes and periodicity?

link: http://ift.tt/24VDqwn