Quick question regarding decomposition methods and the use of omega with the Oaxaca command.

https://core.ac.uk/download/pdf/6442665.pdf page 16 indicates the use of omega with the Oaxaca command gives you the Oaxaca and Ransom's decomposition.

https://www.stata.com/statalist/arch.../msg00585.html indicates the use of omega with the Oaxaca command gives you the Neumark decomposition.

Which one is correct? Sorry to be a pain, just a tad confused!