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1Bằng Plattner, HassoAvailable for University of the Philippines Diliman via SpringerLink. Click here to access
Được phát hành 2011
Electronic Resource -
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3Bằng Yang, ZihengAvailable for University of the Philippines Diliman via Oxford Scholarship Online. Click her to access
Được phát hành 2006
Electronic Resource -
4Được phát hành 2000Also available remotely for University of the Philippines System via Science Direct through. Click here to access thru Open Athens
Electronic Resource