2004
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J. Comput. Appl. Math. 2004;170:399–422. doi:10.1016/j.cam.2004.02.001. .
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Random Oper. Stochastic Equations. 2004;12:11–34. doi:10.1163/156939704323067807. .
2003
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Random Oper. Stochastic Equations. 2003;11:151–166. doi:10.1163/156939703322386904. .
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Vietnam J. Math. 2003;31:475–488. .
2002
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J. Difference Equ. Appl. 2002;8:1085–1105. doi:10.1080/1023619021000053962. .
2000
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Acta Math. Vietnam. 2000;25:145–159. .
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J. Optim. Theory Appl. 2000;105:347–369. doi:10.1023/A:1004661918667. .
1999
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Vietnam J. Math. 1999;27:379–382. .
1998
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Vietnam J. Math. 1998;26:29–44. .
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Acta Math. Vietnam. 1998;23:95–106. .