Graham Parkes
(1989). A cast of many: Nietzsche and depth-psychological pluralism. Man and World, 22 (4), 453-470. https://doi.org/10.1007/BF01250624.
(1983). The overflowing soul: images of transformation in Nietzsche's Zarathustra. Man and World, 16 (4), 335-348. https://doi.org/10.1007/BF01252649.