Hasselbach, Wilhelm Emeritus Group Biophysics, Max Planck Institute for Medical Research, Max Planck Society;
http://www.nature.com/nature-newbio/journal/v246/n150/pdf/newbio246041a0.pdf (Any fulltext)
https://doi.org/10.1038/newbio246041a0 (Any fulltext)
Dupont, Y., & Hasselbach, W. (1973). Structural changes in sarcoplasmic reticulum membrane induced by SH reagents. Nature New Biology, 246, 41-44. doi:10.1038/newbio246041a0.