This is a nice article by Peter Sims.
There is this usual information about some of the best creative brains that have come out of the Montessori system. Though, many of the readers of this web log would know about these logical outcomes of a canonical Montessori method – the aspect of this article that has made me point to it is its marriage of conciseness with some relevant details.
But, this supporting link - Evaluating Montessori Education - a robust research article by Angeline Lillard and Nicole Else-Quest is very scholarly; the time spent on this article is a damn good investment of anyone’s time.
Alternatively, if you have trouble accessing the article - you can try going to this page via this montessori science page. (referrer id/url and all that)
Enjoy!