@article{10_21136_MB_2010_140703,
     author = {Mishra, Debdas and Panigrahi, Pratima},
     title = {Some new classes of graceful {Lobsters} obtained from diameter four trees},
     journal = {Mathematica Bohemica},
     pages = {257--278},
     publisher = {mathdoc},
     volume = {135},
     number = {3},
     year = {2010},
     doi = {10.21136/MB.2010.140703},
     mrnumber = {2683638},
     zbl = {1224.05455},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.2010.140703/}
}