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2. Davenport constant with weights and some related questions;Adhikari;Integers,2006
3. Zero-sum problems in combinatorial number theory;Adhikari;Ramanujan Math. Soc. Lect. Notes Ser.,2006
4. Contributions to zero-sum problems;Adhikari;Discrete Math.,2006
5. Generalizations of some zero sum theorems;Chintamani;Proc. Indian Acad. Sci. Math. Sci.,2012