@article{EJDE_2009__2009__a67,
     author = {Tarama,  Shigeo},
     title = {Lateral estimates for iterated elliptic operators and analyticity},
     journal = {Electronic journal of differential equations},
     year = {2009},
     volume = {2009},
     zbl = {1180.35143},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a67/}
}