Suppletion and neutralization in the verbal system of Hausa.

The causative, the dative and irregular verbs. Tones/vowels length marked. (Article written for Lukas Festschrift - was too long to be included; eventually published under the above title in Africa und Uberesse 55/1-2, 1991/72: 49-96, and 55/3, 1991/72: 188-208).