@Article{ VELASCO_VILLENA:1153-1187,

author = { MARIA VICTORIA VELASCO COLLADO and ARMANDO REYES VILLENA MUÑOZ } ,

title = { DERIVATIONS ON BANACH PAIRS },

journal = { ROCKY MOUNTAIN JOURNAL OF MATHEMATICS },

year = { 1998 },

volume = { 28 },

issn = { 0035-7596 },

pages = { 1153-1187 },

}