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Strategies of inventing problems. La strategia dell’ ’inventar problemi’. Strategien des Problemfindens. (Italian)
Insegn. Mat. Sci. Integrate. (Feb 1990) v. 13(2) p. 201-221.
Classification: C32 C33 D52 D53
1
The ’strategy of error’. La ’strategia dell’errore’. Fehler aufspueren. (Italian)
Insegn. Mat. Sci. Integrate. (Aug 1989) v. 12(8) p. 971-1001.
Classification: E33 D53 C33
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