Research of the 5th novel with Baley and Daneel

I am looking for the 5th novel with Baley and Dannel.
I have read:
- The Cave Of Steel
- The Naked Sun
- The Robots of Dawn
- Robots and Empire

In "The Robots of Dawn", when Baley meets with Dannel in the spaceship, he
mentions a previous meeting on Earth to solve a problem with two
mathematicians.
I didn't find the book with that story.
What is the name of the book ?

Thanks for your answers.

"nolatall" <nolatall.DeleteThis@free.fr> writes:

 >In "The Robots of Dawn", when Baley meets with Dannel in the spaceship, he
 >mentions a previous meeting on Earth to solve a problem with two
 >mathematicians.
 >I didn't find the book with that story.
 >What is the name of the book ?

  It's not a book, just a short story called ``Mirror Image'',
in which Daneel calls on Baley to solve the question of which of two
mathematicians plagiarized the other. Earth, Spacers, and the future
of humanity in general are never at risk, and honestly the story could
have been made as a Susan Calvin story or cut entirely free of any
particular background without much change, but it is good to see our
favorite team again.

  It's included in the book collections ``The Complete Robot'',
``Robot Visions'', and ``The Complete Stories, Volume 2.''

--
    Joseph Nebus
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