@article{oai:tsukuba.repo.nii.ac.jp:00016060,
 author = {Draxler, P. and de, la Pena J.A.},
 issue = {2},
 journal = {Tsukuba Journal of Mathematics},
 month = {Dec},
 pages = {457--469},
 title = {On the existence of postprojective components in the Auslander-Reiten quiver of an algebra},
 volume = {20},
 year = {1996}
}