@book{ LARA,

author = { FRANCISCO JAVIER LARA LARA } ,

title = { SEMIOLOGIA GREGORIANA },

publisher = { ABADÍA DE SILOS },

number = { 1982 },

address = { ABADIA DE SILOS (BURGOS) },

year = { 1982 },

isbn = { 84-300-7344-2 },

}