Note on a Lyapunov-type inequality for a fractional boundary value problem with Caputo-Fabrizio derivative.

In this short note, we present a Lyapunov-type inequality that corrects the recently obtained result in [M. Kirane, B. T. Torebek: A Lyapunov-type inequality for a fractional boundary value problem with Caputo-Fabrizio derivative, J. Math. Ineq. Vol. 12, 4(2018), 1005{1012].