1. A theorem concerning perfect matchings in hexagonal systems

   • Zhang Fuji
   • Chen Rongsi

   OriginalPaper Pages: 1 - 5

2. The expected values of zonal polynomials of elliptically contoured distributions

   • Xu Jian-Lun
   • Fang Kai-Tai

   OriginalPaper Pages: 6 - 14

3. Identification and hypothesis testing on ARIMA (p, d, q) models

   • Gao Hongye

   OriginalPaper Pages: 15 - 20

4. On the existence and uniqueness of classical global solution to a type of Boussinesq equations

   • Gao Yingcai
   • Wei Yuting

   OriginalPaper Pages: 21 - 29

5. The predator-prey model with two limit cycles

   • Ren Yongtai
   • Han Li

   OriginalPaper Pages: 30 - 32

6. Some improved projected quasi-Newton algorithms and their convergence

   • Zhang Jianzhong
   • Zhu Detong
   • Hou Shaoping

   OriginalPaper Pages: 33 - 45

7. Some improved projected quasi-Newton algorithms and their convergence

   • Zhang Jianzhong
   • Zhu Detong
   • Hou Shaoping

   OriginalPaper Pages: 46 - 59

8. Fast stepwise procedures of selection of variables by using AIC and BIC criteria

   • An Hongzhi
   • Gu Lan

   OriginalPaper Pages: 60 - 67

9. On the complexity of an optimal routing tree problem

   • Du Dingzhu
   • Ker-I Ko

   OriginalPaper Pages: 68 - 80

10. Reliability bounds for NBUE and NWUE distributions

    • Cheng Kan
    • He Zongfu

    OriginalPaper Pages: 81 - 88

11. The trace identity, a powerful tool for constructing the hamiltonian structure of integrable systems (II)

    • Tu Guizhang
    • Meng Dazhi

    OriginalPaper Pages: 89 - 96