Billah, M. B., Khan, Hafiz T.A. ORCID: https://orcid.org/0000-0002-1817-3730, Banu, K. and Rahman, M.S.
  
(1993)
Analysis of split-plot design with unequal cell variances.
    The Dhaka University studies. Part B, 41 (2).
     pp. 289-293.
     ISSN 0259-7365