Automatic large-scale oral language proficiency assessment. - Febe de Wet; Christa van der Walt; Thomas Niesler (INTERSPEECH, 2007)

Automatically assessing the oral proficiency of proficient L2 speakers. - Pieter Müller; Febe de Wet; Christa van der Walt; Thomas Niesler (SLaTE, 2009)

Automatic assessment of oral language proficiency and listening comprehension. - Febe de Wet; Christa van der Walt; Thomas Niesler (Speech Commun., 2009)

Readability index as a design criterion for elicited imitation tasks in automatic oral proficiency assessment. - Febe de Wet; Pieter Müller; Christa van der Walt; Thomas Niesler (SLaTE, 2011)