Perhaps you may cite unpublished work:

Author_1, N. & Author_2, N. (Year). Title of the paper, unpublished

Dear Sourabh Munjal

In addition to what is already said by Anton Vrdoljak refer to the paper:

Author(s) (year) Title, name of the journal, and add "accepted" (perhaps add a DOI if assigned or a link to a preprint)

Best regards.

PS. Once the submitted paper is accepted you most likely are able to update the reference info.

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