@article{ARM_2011__47_2_a6,
     author = {Bhatta, S. Parameshwara and Ramananda, H. S.},
     title = {Natural extension of a congruence of a lattice to its lattice of convex sublattices},
     journal = {Archivum mathematicum},
     pages = {133--138},
     publisher = {mathdoc},
     volume = {47},
     number = {2},
     year = {2011},
     mrnumber = {2813539},
     zbl = {1249.06007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2011__47_2_a6/}
}