N. H. Williams, W. M. Whitten, and C. H. Dodson, “PRELIMINARY ANALYSES OF THE FLORAL FRAGRANCES OF SPECIES OF ‘ACINETA, HOULETTIA, LUDDEMANNIA, LYCOMORMIUM, PAPHINIA, AND SIEVEKINGIA’ (ORCHIDACEAE)”, selbyana, vol. 7, no. 2/4, pp. 315–317, Aug. 1984.