Authors: Graffelman, J

Citation: J. Graffelman, Use of the Moore-Penrose inverse in canonical correspondence analysis - Solution, ECONOMET TH, 16(5), 2000, pp. 792-793

Authors: Graffelman, J Hoekstra, RF

Citation: J. Graffelman et Rf. Hoekstra, A statistical analysis of the effect of warfare on the human secondary sexratio, HUMAN BIOL, 72(3), 2000, pp. 433-445

Authors: Graffelman, J Fugger, EF Keyvanfar, K Schulman, JD

Citation: J. Graffelman et al., Human live birth and sperm-sex ratios compared, HUM REPR, 14(11), 1999, pp. 2917-2919