TY - JOUR TI - Robust Tests for Heteroscedasticity Based on Regression Quantiles AU - Roger W. Koenker AU - Gilbert W. Bassett JO - Econometrica PY - 1982 VL - 50 IS - 1 DO - 10.2307/1912528 UR - https://doi.org/10.2307/1912528 ER -