From tex to docx using pandoc. Bibliography issue

I am trying to convert a tex file to docx using pandoc. The tex file contains a bibliography, which is in an external file, named mybib.bib, but located in the same folder of the main document. The package pandoc-citeproc has been installed with pandoc. I type in the cmd terminal:

pandoc -s main.tex bibliography=mybib.bib -o main.docx

However, the bibliography is not converted in the docx file. Do you have an idea why this happens?

Thanks in advance