@Article{ LUNA_MARTIN:57-71,

author = { JUAN DE DIOS LUNA DEL CASTILLO and ANTONIO MARTIN ANDRES } ,

title = { MULTIPLE-CHOICE TESTS: POWER, LENGTH AND OPTIMAL NUMBER OF CHOICES PER ITEM },

journal = { BRITISH JOURNAL OF MATHEMATICAL & STATISTICAL PSYCHOLOGY },

year = { 1990 },

volume = { 43 },

issn = { 0007-1102 },

pages = { 57-71 },

}