@article{ Solr-acta14434, title = {On p-pure subgroups of torsion-free cotorsion groups}, series = {Acta scientiarum mathematicarum}, author = {Leeuwen Leonard C. A. van}, year = {1973}, url = {http://acta.bibl.u-szeged.hu/14434/1/math_035_095-106.pdf} }