@article{MOMA_1993__115_4_178598,
     author = {J.A. Goldstein and R. de de Laubenfels and J.T. Sandefur},
     title = {Regularized {Semigroups,} {Iterated} {Cauchy} {Problems} and {Equipartition} of {Energy.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {47--66},
     publisher = {mathdoc},
     volume = {115},
     number = {4},
     year = {1993},
     zbl = {0784.34046},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1993__115_4_178598/}
}