I guess I should have looked for links a bit more, that nobel has talked at length about it in many interviews. Anyway this myth has been debunked many times and there are plenty of sources even if you don't make an effort, here is another one.

Even if they limit the statistics to the same sector and full-time jobs, there are still many variables, things like men tend to work more overtime and worse hours. If anything, those who defend this myth should provide evidence that this happens, it makes no sense to defend that it is systematic but only be able to back it up with vague statistics from which they draw whatever conclusions they want.

To give an example of facts in reality, in spain where controls are very hard, there are about 20 convictions a year for wage discrimination, and it is not even only towards women. Purely anecdotal.