Dimitris G. Dikeos, Harvey Wickham, Colm McDonald, Muriel Walshe, Thordur Sigmundsson, Elvira Bramon, Anton Grech, Timothea Toulopoulou, Robin Murray, Pak C. Sham,
Distribution of symptom dimensions across Kraepelinian divisions. British Journal of Psychiatry. ,vol. 189, pp. 346- 353 ,(2006) ,
10.1192/BJP.BP.105.017251