AGGREGATION OP POSITIVE HOLE CENTRES IN SrCl2, DOPED WITH ALKALI CATIONS E. RZEPKA, S. LEFRANT et L. TAURELJ. Phys. Colloques, 37 C7 (1976) C7-230-C7-231DOI: https://doi.org/10.1051/jphyscol:1976755