I doubted whether I should use the preposition "with", "by" or no preposition at all in the following sentence:
I do not estimate equation (#) by using/with use of/using [name of some econometric method] because [explaining the reasons].
To answer this question myself I did some research. The following web page says that one uses the preposition "by" to indicate a mean or method. As I refer to a particular (econometric) method, it could be an option to use "by". However, I checked how other authors did it in the literature I write about and I came to the conclusion that it should be:
I do not estimate equation (#) using [name of some econometric method] because [explaining the reasons].
However, this sounds a bit odd to a non-native English speaker. Is it the last quote correct anyway?