@article{NUMA_1986__48_133057,
     author = {G.M. Trojan},
     title = {Optimal {Transformations} for {Scalar} {Sequences.}},
     journal = {Numerische Mathematik},
     pages = {21--32},
     year = {1986},
     volume = {48},
     zbl = {0523.65003},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1986__48_133057/}
}