How do I interpret regression coefficients when there are log transformations?

[Zel_Fortin]

Hi,

I'd like to know how to interpret with percentage the slope coefficients of a regressoin when I have:

A- log(Y) ~ log(X)

b- log(Y) ~ X

c- Y ~ log(X)

So far I found this web site, but I'm not sure it is accurate:

http://www.ats.ucla.edu/stat/sas/faq/sas_interpret_log.htm

Could anyone propose a solution to my question and/or confirm/deny the accuracy of the website?

Thanks in advance!

Cheers

JM