@Article{ Kim_LEE_MARTÍN:920-929,

author = { Sun Kwang Kim and HAN JU LEE and MIGUEL MARTÍN SUÁREZ } ,

title = { The Bishop-Phelps-Bollobás theorem for operators from ell_1-sum of Banach spaces },

journal = { Journal of Mathematical Analysis and Applications },

year = { 2015 },

volume = { 248 },

pages = { 920-929 },

}