APA (7th ed.) Citation

Pirkola, A., Leppänen, E., & Järvelin, K. The RATF Formula (Kwok's Formula): Exploiting Average Term Frequency in Cross-Language Retrieval. University of Borås.

Chicago Style (17th ed.) Citation

Pirkola, Ari, Erkka Leppänen, and Kalervo Järvelin. The RATF Formula (Kwok's Formula): Exploiting Average Term Frequency in Cross-Language Retrieval. University of Borås.

MLA (9th ed.) Citation

Pirkola, Ari, et al. The RATF Formula (Kwok's Formula): Exploiting Average Term Frequency in Cross-Language Retrieval. University of Borås.