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Journal Article
Rott, Benjamin 
ORCID: 0000-0002-8113-1584, Specht, Birte and Knipping, Christine
(2021).
A descriptive phase model of problem-solving processes.
ZDM-Math. Educ., 53 (4).
S. 737 - 753.
HEIDELBERG:
SPRINGER HEIDELBERG.
ISSN 1863-9704