, 1997, 'We have met the tricksters and they are us', The American Journal of Semiotics 14 (1-4), 211-215.
, 1994, 'The limits of the semiotic self', The American Journal of Semiotics 11 (1-2), 97-107.
, 1987a, 'Outline of an education semiotic', The American Journal of Semiotics 5 (2), 201-216.
, 1987b, 'Semiotics and education: an instance of the "new" paradigm', The American Journal of Semiotics 5 (2), 195-199.