%0 Journal Article %T Effect of phase separation on the fracture toughness of SiO2a£¿£¿B2O3a£¿£¿Na2O glass %A A K Seal %A G C Das %A M K Mitra %A Nihar Ranjon Roy %A P Chakraborti %A S Mukherjee %J - %D 2005 %U https://www.ias.ac.in/describe/article/boms/028/05/0457-0460