E721 -- De integrationibus difficillimis, quarum integralia tamen aliunde exhiberi possunt
(English Translation of Title)
According to Eneström, "Integration will be accomplished by substitution of complex quantities."
According to the records, it was presented to the St.
Petersburg Academy on March 31, 1777.
Originally published in Nova Acta Academiae Scientarum Imperialis Petropolitinae 14, 1805, pp. 62-74
Opera Omnia: Series 1, Volume 19, pp. 369 - 389
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