Cálculo operacional (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Cálculo operacional" in Portuguese language version.

refsWebsite

Global rank Portuguese rank

838^th place

320^th place

8,650^th place

low place

3^rd place

6^th place

441^st place

2,031^st place

652^nd place

920^th place

2,594^th place

4,930^th place

books.google.com

Robert Bell Carmichael (1855) A treatise on the calculus of operations, Longman, link from Google Books

George Boole (1859) A Treatise on Differential Equations, chapters 16 &17: Symbolical methods, link from HathiTrust

Norbert Wiener (1926) The Operational Calculus, Mathematische Annalen 95:557 , link from Göttingen Digitalisierungszentrum