Fabiana Zamora Wilke Beatriz Regina Tavares Franciosi Paulo Werlang Oliveira Dalcidio Moraes Claudio Modelling the Measurement Uncertainty by Intervals. 82-88 1998 4 J. UCS 1 db/journals/jucs/jucs4.html#WilkeFOC98 http://www.jucs.org/jucs_4_1/modelling_the_measurement_uncertainty