@article{10_4153_CMB_2010_102_7,
     author = {Preda, Ciprian and Preda, Petre},
     title = {Lyapunov {Theorems} for the {Asymptotic} {Behavior} of {Evolution} {Families} on the {Half-Line}},
     journal = {Canadian mathematical bulletin},
     pages = {364--369},
     year = {2011},
     volume = {54},
     number = {2},
     doi = {10.4153/CMB-2010-102-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2010-102-7/}
}