Knoll, Steffen Center for Educational Research, Max Planck Institute for Human Development, Max Planck Society;
Stigler, J. W., Gonzales, P., Kawanaka, T., Knoll, S., & Serrano, A. (1999). The TIMSS videotape classroom study: Methods and findings from an exploratory research project on eighth-grade mathematics instruction in Germany, Japan, and the United States. Washington DC: U. S. Government Printing Office.
