Assessing children's reading comprehension on paper and screen: A mode-effect study. - Hildegunn Støle; Anne Mangen; Knut Schwippert (Comput. Educ., 2020)

SURVEYHLM: A SAS Macro for Multilevel Analysis with Large-Scale Educational Assessment Data. - Daniel Kasper; Katrin Schulz-Heidorf; Knut Schwippert (J. Stat. Softw., 2025)