Which conflict related theory is credited to Fisher and Ury?

Question

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Fisher and Ury developed the Getting to Yes theory which is a conflict related theory. This theory describes negotiation as having four steps. These steps are separating people from the problem, focusing on interests and not differences, generating potential solutions that are mutually beneficial and using objective criteria, rather than subjective data, to negotiate solutions.

Which Conflict Related Theory Is Credited to Fisher and Ury