Detection of mechanical ship features from underwater acoustic sound. - Johannes G. Lourens; M. Wynand Coetzer (ICASSP, 1987)

Automatic detection of image impairments. - Thomas C. du Toit; Johannes G. Lourens (ICASSP, 1988)

Measuring audio SNR on digital broadcast systems. - Johannes G. Lourens; David M. Weber (IEEE Trans. Broadcast., 1994)

On the TV ghost image model. - Johannes G. Lourens; W. R. M. de Waal (IEEE Trans. Broadcast., 1994)

A quadrature baseband approach to direct digital FM synthesis. - Gert-Jan van Rooyen; Johannes G. Lourens (IEEE Trans. Broadcast., 2000)