@article{oai:ynu.repo.nii.ac.jp:00009839,
 author = {Enami, Kego and Negami, Seiya},
 journal = {The Yokohama mathematical journal},
 month = {},
 pages = {131--141},
 title = {Gaps of beans functions of graphs over intervals bounded by unit fractions},
 volume = {64},
 year = {2018}
}