@article{CTT100661221,
  author = {Masaaki Yoshifuji and Yuichi Hirano and Gregor Schnakenburg and Rainer Streubel and Edgar Niecke and Shigekazu Ito},
  title = {New Aspects of 1,3-Diphosphacyclobutane-2,4-diyls},
  journal = {Helv. Chim. Acta},
  year = 2012,
}