@misc{yuta2022a,
  title = {Topological charge of soft X-ray vortex beam determined by inline holography},
  author = {Yuta Ishii, Hironori Nakao, Masaichiro Mizumaki, Yusuke Wakabayashi, Taka-hisa Arima, Yuichi Yamasaki},
  publisher = {Nature Research},
  year = {2022-01-20},
  keywords = {Vortex beam, Topological beam, X-ray imaging, Holography}
}