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10.1007%2FBF03261907
10.1007%2FBF03261907
https://api.crossref.org/works/10.1007%2FBF03261907
c5097b78f6f18632d243172efc1cc70388d4b37b
P854
10.1007%2FBF03261907
https://api.crossref.org/works/10.1007%2FBF03261907