APA (7th ed.) Citation

Abert, M., & Nikolov, N. (2007). Rank gradient, cost of groups and the rank versus Heegaard genus problem.

Chicago Style (17th ed.) Citation

Abert, M., and N. Nikolov. Rank Gradient, Cost of Groups and the Rank Versus Heegaard Genus Problem. 2007.

MLA (9th ed.) Citation

Abert, M., and N. Nikolov. Rank Gradient, Cost of Groups and the Rank Versus Heegaard Genus Problem. 2007.