1 Subjects: “...input-output model...”

2 Subjects: “...mathematical models...”

3 Subjects: “...modeling...”

4 Subjects: “...mathematical modelling...”

5 Subjects: “...Computer modelling and simulation / bicssc...”

6 Subjects: “...bilevel model...”

7 Subjects: “...cooperation model...”

8 Subjects: “...mathematical modeling...”

9 Subjects: “...mathematical modeling...”

10 Subjects: “...mathematical modeling...”

11 Subjects: “...analytical modeling...”

12 Subjects: “...economic models...”

13 Subjects: “...Discrete Element Model...”

14 Subjects: “...mathematical modeling...”

15 Subjects: “...mathematical model for evaluating the effectiveness of integrating information technology...”

16 Subjects: “...ABC model...”

17 Subjects: “...ABC model...”

18 Subjects: “...ABC model...”

19 Subjects: “...modeling of grand theory of action of Talcott Parsons...”