NETL:10.1306/13131056H33326
NETL:10.1306/13321466M973492
NETL:10.1306/eg.06011212002
NETL:10.1306/eg.06210404013
NETL:10.1306/eg.06231010008
NETL:10.1306/eg.09221515011
NETL:10.1306/eg.09280404023