中国科学院数学与系统科学研究院期刊网
EXACT NULL CONTROLLABILITY FOR A CLASS OF DISCRETE INFINITE DIMENTIONAL LINEAR SYSTEM WITH CONTROL ENERGY CONSTRAINT
Chen Zhao-kuan
Acta Mathematicae Applicatae Sinica . 1986, (2): 222 -226 .  DOI: 10.12387/C1986027