@article{Pa84, <br>AUTHOR = {Paul, W.J.},<br>TITLE = {On Heads Versus Tapes},<br>VOLUME = {28}, <br>YEAR = {1984},<br>PAGES = {1--12}, <br>URL = {http:///publikationen/Pa84.pdf}, <br>SERIES = {Theoretical Computer Science (TCS)},<br>EE = {http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V1G-45M2JY7-2&_user=1592387&_coverDate=12%2F31%2F1983&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_searchStrId=1533647383&_rerunOrigin=google&_acct=C000053620&_version=1&_urlVersion=0&_userid=1592387&md5=f6a3f61609fcbf31b6b39947d2f31ef0&searchtype=a},<br>}