@Article{ PLAZA:54-66,

author = { JOSE LUIS PLAZA CHILLON } ,

title = { JUAN CARLOS OSPINA ORTIZ (VENADILLO-TOLIMA (COLOMBIA-1963) },

journal = { ESPIRAL },

year = { 1999 },

volume = { 9 },

issn = { 1678-1643 },

pages = { 54-66 },

}