Approximating Fisher's information for the replicated linear circular functional relationship model. Hussin, Abdul Ghapor — 2005 Bulletin of the Malaysian Mathematical Sciences Society. Second Series
The unreplicated complex linear functional relationship model and its application. Hussin, Abdul Ghapor — 1998 Bulletin of the Malaysian Mathematical Society. Second Series
On estimating error concentration parameter for circular functional model. Hussin, Abdul Ghapor; Chik, Zazli — 2003 Bulletin of the Malaysian Mathematical Sciences Society. Second Series