Meerum TerwogtM.KoopsW.OosterhoffT.OlthofT. (1986) Development in processing of multiple emotional situations. Journal of General Psychology, 11, 109–121.
2.
OlthofT.Meerum TerwogtM.van EckO.KoopsW. (1987) Children's knowledge of the integration of successive emotions. Perceptual and Motor Skills, 65, 407–414.