@article{10_4064_sm158_2_4,
     author = {Ryo Ikehata and Kenji Nishihara},
     title = {Diffusion phenomenon for
  second order linear evolution equations},
     journal = {Studia Mathematica},
     pages = {153--161},
     publisher = {mathdoc},
     volume = {158},
     number = {2},
     year = {2003},
     doi = {10.4064/sm158-2-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm158-2-4/}
}