Contre-exemples au principe de Hasse pour certains tores coflasques
  We use an explicit description of the Brauer-Manin obstruction, recently obtained by Colliot-Th\'el\`ene, to study the density of varieties in a certain family which do not satisfy the Hasse principle. 
R. de la Bret\`eche, T. D. Browning
math.NT math.AG