@article{SF_1996__52_3_135455,
     author = {J. Okninski and J.S. Ponizovskii},
     title = {A new matrix representation theorem for semigroups.},
     journal = {Semigroup forum},
     pages = {293--306},
     publisher = {mathdoc},
     volume = {52},
     number = {3},
     year = {1996},
     url = {http://geodesic.mathdoc.fr/item/SF_1996__52_3_135455/}
}