@misc{the+zero+sum+constant+the+davenport+constant+and+their+analogues,
    author = {Zakarczemny, Maciej},
    title = {The zero-sum constant, the Davenport constant and their analogues},
    journal = {Technical Transactions},
    address = {Kraków},
    publisher = {Wydawnictwo Politechniki Krakowskiej},
    date = {2020},
    number = {Vol. 117, iss. 1}
}