Daniel Schwab E. The bicyclic semigroup as the quotient inverse semigroup by any gauge inverse submonoid. J. Algebra Comb. Discrete Struct. Appl. [Internet]. 2022 May 13 [cited 2026 Sep. 12];9(2):123-31. Available from: https://jacodesmath.com/index.php/jacodesmath/article/view/226