N. Nuraini
(1), E. Soewono
(2), K.A. Sidarto
(3)
(1)
Industrial and Financial Mathematics Research Group, Faculty of Mathematics and Nat-
ural Sciences, Institut Teknologi Bandung, Bandung 40132, Indonesia., Indonesia,
(2)
Industrial and Financial Mathematics Research Group, Faculty of Mathematics and Nat-
ural Sciences, Institut Teknologi Bandung, Bandung 40132, Indonesia., Indonesia,
(3)
Industrial and Financial Mathematics Research Group, Faculty of Mathematics and Nat-
ural Sciences, Institut Teknologi Bandung, Bandung 40132, Indonesia., Indonesia