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Boundary Value Problems > 2018 > 2018 > 1 > 1-20
Applied Mathematics Letters > 2007 > 20 > 7 > 817-823
Computers and Mathematics with Applications > 2003 > 45 > 6-9 > 1303-1309
Boundary Value Problems > 2018 > 2018 > 1 > 1-20
Applied Mathematics Letters > 2007 > 20 > 7 > 817-823
Computers and Mathematics with Applications > 2003 > 45 > 6-9 > 1303-1309