1. Wang, R.L. (2020) Based on Multivariate Statistical Analysis of Regional Private Enterprises and Individual Employment Study. Modern Marketing, No. 7, 193-195.
2. Luo, Z. (2011) The Effect of Trade Liberalization on Employment: Comes from the Data of the Tertiary Industry and Individual Private Enterprises. Economic Review, No. 5, 79-85+97.
3. Chen, B.P. (2012) Employment Evaluation Model of Private Enterprises Based on Grey Correlation Method. Computer and Information Technology, 20, 19-21.
4. Spatio-temporal principal component analysis
5. A note on Optimal weights and variable selections for multivariate survival data