Hidemitsu Ogawa What Can We See behind Sampling Theorems? 688-695 2009 92-A IEICE Transactions 3 http://search.ieice.org/bin/summary.php?id=e92-a_3_688&category=A&year=2009&lang=E&abst= db/journals/ieicet/ieicet92a.html#Ogawa09