TY  - RPRT
TI  - Comment on "Local observations of phase singularities in optical fields in waveguide structures".
AU  - B Vohnsen
AU  - S I Bozhevolnyi
PY  - 2001
DO  - 10.1103/physrevlett.87.259401
UR  - https://pubmed.ncbi.nlm.nih.gov/11736614/
ID  - 11736614
ER  -