APA (7th ed.) Citation

Bacher, R. Euclid meets Popeye: The Euclidean Algorithm for $2\times 2$ Matrices. Académie des sciences.

Chicago Style (17th ed.) Citation

Bacher, Roland. Euclid Meets Popeye: The Euclidean Algorithm for $2\times 2$ Matrices. Académie des sciences.

MLA (9th ed.) Citation

Bacher, Roland. Euclid Meets Popeye: The Euclidean Algorithm for $2\times 2$ Matrices. Académie des sciences.

Warning: These citations may not always be 100% accurate.