APA (7th ed.) Citation

Mierzwiak, R., Xie, N., & Dong, W. (2019). Classification of Research Problems in Grey System Theory based on Grey Space Concept. Journal of Grey System, 31(1), .

Chicago Style (17th ed.) Citation

Mierzwiak, Rafal, Naiming Xie, and Wenije Dong. "Classification of Research Problems in Grey System Theory Based on Grey Space Concept." Journal of Grey System 31, no. 1 (2019).

MLA (9th ed.) Citation

Mierzwiak, Rafal, et al. "Classification of Research Problems in Grey System Theory Based on Grey Space Concept." Journal of Grey System, vol. 31, no. 1, 2019.