Sa-aat Niwitpong and Rada Somkhuean and Suparat Niwitpong, Behrens-Fisher Problem with One Variance Unknown. journal = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology. September 2013, vol. 81(9). 1440 - 1443 [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/16728.