Daniel Daigle, Gene Freudenburg, Takanori Nagamine. Generalizations of Samuel's criteria for a ring to be a unique factorization domain. Journal of Algebra. 2022. 594. 271-306
Takanori Nagamine. On Some Sufficient Conditions for Polynomials to Be Closed Polynomials over Domains. Springer Proceedings in Mathematics and Statistics. 2020. 319. 223-231
Takanori Nagamine. A note on retracts of polynomial rings in three variables. JOURNAL OF ALGEBRA. 2019. 534. 339-343
Chiaki Kitazawa, Hideo Kojima, Takanori Nagamine. Closed polynomials and their applications for computations of kernels of monomial derivations. JOURNAL OF ALGEBRA. 2019. 533. 266-282
Takanori Nagamine. On some properties of coordinates in polynomial rings. COMMUNICATIONS IN ALGEBRA. 2018. 46. 10. 4265-4272