Application of electrical resistance tomography in an oscillatory baffled column for gas-liquid two-phase flow by Hamzah, A. A., Ruzairi, A. R., Takriff, M. S., Mohamad, E. J., Pusppanathan, J., Azman, I. N., Mohd. Ghazali, M. S., Sabri, M. Z., Mohrab, K. F., Ghafar, F., Zahari, M. N.