張裕隆李明融余清祥李詠玄 Tsung Jui CHIANG LIN 2018 MATHEMATICAL MODEL FOR THE ENTERPRISE COMPETITIVE ABILITY AND PERFORMANCE THROUGH A PARTICULAR EMDEN FOWLER EQUATION u′′−n−q−1u n q 0 ∗ Acta Mathematica Scientia Vol 38 No 4 pp 1311–1321 SCIE 為通訊作者