DOI:
10.1055/s-00000162
physiopraxis
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References
Spielberger CD ANXIETY AS AN EMOTIONAL STATE (Springer-Lehrbuch). In B Renneberg B, Hammelstein P. Hrsg
Anxiety (S. 23–49).
Berlin: Heidelberg: Elsevier; 1972. doi:10.1016/B978-0-12-657401-2.50009-5
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