* Walach, H., C. Rilling, U. Engelke (2001): Efficacy of Bach-flower remedies in test anxiety: a double-blind, placebo-controlled, randomized trial with partial crossover. En J Anxiety Disord, vol. 15, Nº 4, p. 359-366 | * Walach, H., C. Rilling, U. Engelke (2001): Efficacy of Bach-flower remedies in test anxiety: a double-blind, placebo-controlled, randomized trial with partial crossover. En J Anxiety Disord, vol. 15, Nº 4, p. 359-366 |