@article{NUMA_1983__41_132840,
     author = {N.M. Temme},
     title = {The {Numerical} {Computation} of the {Confluent} {Hypergeometric} {Function} {U(a,b,z)}},
     journal = {Numerische Mathematik},
     pages = {63--82},
     publisher = {mathdoc},
     volume = {41},
     year = {1983},
     zbl = {0489.33001},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1983__41_132840/}
}