Siegal M. et al.: A re-examination of children’s conceptions of contagion. Psychol Health 1990, 4 (2): 159–165.
254
Siegal M. et al.: Contamination sensitivity and the development of disease-avoidant behaviour. Philos Trans R Soc Lond B Biol Sci 2011, 366 (1583): 3427–3432.