@article{10_4064_sm_119_3_247_254,
     author = {Celso Martinez and  },
     title = {A note on a formula for the fractional powers of infinitesimal generators of semigroups},
     journal = {Studia Mathematica},
     pages = {247--254},
     publisher = {mathdoc},
     volume = {119},
     number = {3},
     year = {1996},
     doi = {10.4064/sm-119-3-247-254},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-119-3-247-254/}
}