@article{10_2298_FIL2211625M,
     author = {Sujoy Majumder and Arup Dam},
     title = {On an open problem of {L\"u,} {Li} and {Yang}},
     journal = {Filomat},
     pages = {3625 },
     year = {2022},
     volume = {36},
     number = {11},
     doi = {10.2298/FIL2211625M},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/FIL2211625M/}
}