El uso de los drills para combatir fosilizaciones en la interlengua de aprendientes portugueses de ELE / Using drills to fight the fossilizations in the interlanguage of Portuguese ELE learners. An empirical study. Tejuelo [Internet]. 2022 Sep. 23 [cited 2024 Nov. 21];36:249-80. Available from: https://tejuelo.unex.es/tejuelo/article/view/4011