@article{10_21136_MB_2017_0011_16,
     author = {Zhang, Minjie and Li, Shuchao},
     title = {Extremal properties of distance-based graph invariants for $k$-trees},
     journal = {Mathematica Bohemica},
     pages = {41--66},
     publisher = {mathdoc},
     volume = {143},
     number = {1},
     year = {2018},
     doi = {10.21136/MB.2017.0011-16},
     mrnumber = {3778049},
     zbl = {06861591},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.2017.0011-16/}
}