@article{10_4064_sm208_3_4,
     author = {Teresa Berm\'udez and Carlos D{\'\i}az Mendoza and Antonio Martin\'on},
     title = {Powers of $m$-isometries},
     journal = {Studia Mathematica},
     pages = {249--255},
     publisher = {mathdoc},
     volume = {208},
     number = {3},
     year = {2012},
     doi = {10.4064/sm208-3-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm208-3-4/}
}