Kim, Y., Lee, K. J., Lee, J. H., Lee, J., Kim, Y. M., Jin, H., ... & Yun, M. H. (2018, December). A Study on Developing Customer Groups in Consolidated Financial Services Using Qualitative and Quantitative Analysis. In 2018 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM) (pp. 168-172). IEEE.

https://ieeexplore.ieee.org/abstract/document/8607770