1.

1954

The vision of archetypal light. The Review of Religion, 18, 145 - 162

2.

1954

The angelic choirs. The Hibbert Journal, 52, 262-277

3.

1956

The process of separation and return in experiences fully "out of the body". ProcSPR, 50, 240-274

4.

1957

The early Buddhist teaching concerning "birth". The Journal of Religion, 37, 189-200

5.

1961

The Mystical Life. London: Faber and Faber

6.

1965

Evidence of survival from "other-world" experience, JASPR, 59, 160-166

7.

1965

Psychical effects of mescalin and LSD considered in the light of experimental mysticism. Parapsychologica, 4 - 20. Johannesburg: S.A. Society for Psychical Research.

8.

1967

Parapsychology and mystical experience. Parapsychologica II, 5-15, Johannesburg: S.A. Society of Psychical Research.

9.

1967

Philosophy of Space and Time. London: George Allen and Unwin

10.

1968

Parapsychology in the light of the 20th century concepts of space and time. Parapsychologica III, 5-13.

11.

1970

Mysticism Today, nine lectures. Board of Extra-Mural Studies, University of Cape Town (roneoed).

12.

1971

The phenomenology of observation and explanation in Quantum Theory. In Ted Bastin (Ed.), Quantum Theory and Beyond. Cambridge University Press.

13.

1973

Quantum Theory and Parapsychology . JASPR, 67:341-360

14.

1974

The Problem of Atlantis. Six lectures for the University of the Air. South African Broadcasting Corporation (roneoed).

15.

1975

Parapsychology as an analytico-deductive science. In Quantum Physics and Parapsychology, Ed. Laura Oteri, Parapsychology Foundation, New York, 181-204

16.

1975

The scientific evaluation of out-of-the-body experience. In Parapsychology in South Africa, Ed. J.C, Poynton, 95-108.

17.

1975

A three-tier ontology for Parapsychology and modern physics. In Parapsychology in South Africa, Ed. J.C. Poynton, 124-134

18.

1976

Experimentally testable predictions in the field of psi-phenomena. The Journal of Research in PSI Phenomena. Vol 1, No.1, 24-37. Kingston, Ontario.

19.

1977

Parapsychology and Physics. In Handbook of Parapsychology, Ed. B, Wolman, 730-756. New York: Van Nostrand Reinhold

20.

1977

The convergence of physics and psychology. In Future Science, Ed. John White and Stanley Krippner, 269-308. New York: Doubleday.

21.

1977

A dialogue on mystical experience. In This Time-bound Ladder, (Ed.) Edward Robinson, 151-184. Oxford: The Religious Experience Research Unit.

22.

1978

Thoughts on the art of mystical description. Studia Mystica, 1:4, 59-73.

23.

1978

The process of separation... (reprint of most of No.3 above). in (Ed.) D.Scott Rogo, Mind Beyond the Body, 270-306. Penguin.

24.

1979-80

An introduction to the mystical model for psychiatry. Journal of Altered States of Consciousness, 5:31-53

25.

1980

The mystical model for Psychopathology, and applications. Parapsychological Journal of South Africa, Vol.1:2, 14-44.

26.

1980

A brief guide for theosophists to the foundations of modern physics. The theosophist, 101:5, 238-245.

27.

1982

The Isa Upanishad, A new translation. Studia Mystica, 5:2, 16-20.

28.

1983

Out-of-body experience and autoscopy. Parapsychological Journal of South Africa, 4:2, 144-149.

29.

1984

The Mundaka Upanishad, second chapter: translation and commentary. Studia Mystica, 7:4, 3-12.

30.

1985

The mystical way and habitualization of mystical states. In (Eds.) B.Wolman and M.Ullman, Handbook of States of Consciousness. 613-659. New York: Van Nostrand Reinhold.

31.

1986

Old and New Evidence on the Meaning of Life: Vol.1, An Introduction to Scientific Mysticism, 11+267 pages. Gerrards Cross: Colin Smythe.

32.

1987

Individual and world "illfare". mystical teachings on the meaning of suffering and evil. Silver Jubilee Souvenir, the Theosophy-Science Study Group, 163-172. The Theosophical Society. India, Adyar.

33.

1993

Aphorisms on Spiritual Method: the "Yoga Sutras of Patanjali" in the Light of Mystical Experience; 20+339 pp. Gerrards Cross; Colin Smythe.

34.

1994

Cognitive pathologies and the new paradigm in Physics. Correspondence, JASPR, 88: 81-86

35.

1995

Short-term precognition, time-skills and the world-plan for physical events. JSPR, 60: 300-316

36.

1996

A firsthand experiential view of multiple personality and possession." JSPR, 61: 193-210.

37.

1998

Dream and dreamlike states seen as kinds of possession: implications for mediumship, ESP and survival. JSPR, 62: 407-416

38.

2000

The Dynamics of Spiritual Development: Vol.2 of Old and New Evidence on the Meaning of Life, 25+624 pages. Gerrards Cross: Colin Smythe.

39.

2003

On the scientific validation and reality rating of reports of non-physical experience. JSPR 67: 37-51.

40.

2003

The problem of discarnate survival: towards a clarification of ideas in the light of a comprehensive life-world view. JSPR 67: 96-114.

41.

2006

Universal Theology and Life in the Other Worlds: Vol 3 of Old and New Evidence on The Meaning of Life, 39 + 352 pages