APA (7th ed.) Citation

Petcov, S. T., & Tanimoto, M. $$A_4$$ A 4 modular invariance and the strong CP problem. SpringerOpen.

Chicago Style (17th ed.) Citation

Petcov, S. T., and M. Tanimoto. $$A_4$$ A 4 Modular Invariance and the Strong CP Problem. SpringerOpen.

MLA (9th ed.) Citation

Petcov, S. T., and M. Tanimoto. $$A_4$$ A 4 Modular Invariance and the Strong CP Problem. SpringerOpen.

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