Lange, S.; Larsson, K. Syntactical development of a Swedish girl Embla, between 20 and 42 months of age. Part I, Age 20-25 months. Stockholm: Stockholms Universitet, Institutionen for Nordiska Språk, 1973. Project Child Language Syntax, Report No. 1.
Project Child Language Syntax and project early reading: a theoretical investigation and its practical application. Stockholm: Stockholms Universitet, Institutionen för Nordiska Språk, 1973. Project Child Language Syntax, Report No. 2.