@article{escidoc:0756, title = {{Characterization of free volumes in amorphous and nanostructured Pr2Fe14B using positron lifetime spectroscopy}}, author = {Wu, Y. C. and Ye, F. and Barbe, V. and Sprengel, W. and Reimann, K. and Reichle, K. J. and Goll, D. and W\"urschum, R. and Schaefer, H. E.}, journal = {{Physica Status Solidi A-Applied Research}}, volume = {198}, number = {1}, pages = {204--209}, year = {2003}, doi = {} }