minor correction to the pdf version of this article
Neil Smalheiser, University of Illinois-Chicago
10 February 2009
Regarding the equation displayed in section 2.3.1, the one displayed in the online (HTML) version is correct, but please note that there is an typographic error in the pdf version: The character l in both "e to the power of l" and "l to the power of x" should instead be Lambda (the lower case Greek letter).
minor correction to the pdf version of this article
10 February 2009
Regarding the equation displayed in section 2.3.1, the one displayed in the online (HTML) version is correct, but please note that there is an typographic error in the pdf version: The character l in both "e to the power of l" and "l to the power of x" should instead be Lambda (the lower case Greek letter).
Competing interests
No competing interests.