@misc{10_4153_CMB_1975_131_5,
     title = {Using {Rolle's} {Theorem} in {Exponential} {Function-Derivative} {Approximation}},
     journal = {Canadian mathematical bulletin},
     pages = {755--757},
     year = {1975},
     volume = {18},
     number = {5},
     doi = {10.4153/CMB-1975-131-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-131-5/}
}