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Continue to ChatOn a difference scheme of second order of accuracy for the Bitsadze-Samarskii type nonlocal boundary-value problem - https://avesis.comu.edu.tr/yayin/24a8856a-d433-45bd-a83f-340bf7587a24/on-a-difference-scheme-of-second-order-of-accuracy-for-the-bitsadze-samarskii-type-nonlocal-boundary-value-problem