W.Y.Yip, A.K.Koh dan R.Abd-Shukor, 2005, Superconducting Properties of Pr-Substituted (Dy1-x Prx (Sr Ba Cu3 07-5. Ceramic International, 31: 533-536.
A.K. Yahya, A.K. Koh, R.Abd.Shukor, 1999. Comparative study of ultrasonic velocity in differently annealed and quenched GdBaSrCu3o7-g. Phys. Lett. A.259:295-301.
A.K.Koh, 1998. Relationship between lattice and an ionic ratio in II-VI and III-V semiconductors. Phys. Stat. Sol (b) 209: 25-27
A.K.Koh 1996. Correlations between cohesive energy and radius ratio in akali halides with NaC1 structure. J.Phys. Chem. Solids 57(4): 369-371
A.K.Koh, 1995. Correlation between the szegeti charge and the differences in phase volumes in the alkali halides. Physics ststus solidi (b), 191:307-310
R.Abd-shukor, a.Rahman Omar, A.K.Koh and F.Sulaiman, 1995. Normal state and superconductivity of Er Ba2(Cu1-xCrx)3o7-g.(x= 0.01).J.Superconductivity 8(2): 221-225