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Authors: Ho Anh Tuan, Dumitru BULAT, Marin USTÎI.
Journal: Scientific journal. Real science and nature. Moldova state University.; ISSN: 1814-3237; Year: 2014
[2]
Authors: Bich Hien Nguyen; Thị Hien Bui
Journal: Научный аспек No3-2014, page 54; ISSN: ISSN 226-5694; Year: 2014
[3]
Authors: Nguyen Huu Quang, Bui Cao Van, Dang Thi Tuoi
Journal: Applied Mathematical Sciences; ISSN: 1312-885X (print) ; Year: 2014
[4]
Authors: Zead Mustafa, Tran Van An, Le Thanh Quan
Journal: Applied Mathematical Sciences; ISSN: 0066-5452; Year: 2014
[5]
Authors: Mai Văn Tư và Trần Hà Phương
Journal: East - West J. of Mathematics: vol. 9, No 1 ( 2014), PP: 39 - 46; ISSN: 122-34-5678; Year: 2014
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Journal: ; ISSN: ; Year: 2013
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Journal: ; ISSN: ; Year: 2013
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Journal: ; ISSN: ISSN 0217-5460; Year: 2013
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Journal: ASEAN Journal on Science and technology for development; ISSN: ISSN 0217-5460; Year: 2013