### On the best non-symmetric $$$L_1$$$-approximations under the constraints on their derivatives

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Babenko V.F., Parfinovich N.V. "On exact values of the best approximations of classes of differentiable periodic functions by splines", *Mat. zametki*, 2010; 87(5): pp. 669-683. (in Russian) doi:10.1134/S0001434610050032

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DOI: https://doi.org/10.15421/241505

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