  We consider reflected backward stochastic differential equations, with two
barriers, defined on probability spaces equipped with filtration satisfying
only the usual assumptions of right continuity and completeness. As for
barriers we assume that there are c\`adl\`ag processes of class D that are
completely separated. We prove the existence and uniqueness of solutions for
integrable final condition and integrable monotone generator. An application to
zero-sum Dynkin game is given.
