Transactions of Tianjin University
Transactions of Tianjin University > 2011 > 17 > 6 > 450-453
Transactions of Tianjin University > 2012 > 18 > 1 > 69-72
Transactions of Tianjin University > 2011 > 17 > 6 > 450-453
Transactions of Tianjin University > 2012 > 18 > 1 > 69-72