共 13 条
[3]
Das K. p., 2011, ISRN Applied mathematics, V2011, P16, DOI [10.5402/2011/807486, DOI 10.5402/2011/807486]
[5]
Hsu SB., 2002, MATH BIOSCI
[6]
Kesh D, 2000, MATH METHOD APPL SCI, V23, P347, DOI 10.1002/(SICI)1099-1476(20000310)23:4<347::AID-MMA117>3.0.CO
[7]
2-F
[9]
Muhseen A.A., 2015, IOSR JOURNAL OF MATH, V11, P38
[10]
Naji R. K., 2016, IOSR J MATH, V12, P90