TY  - RPRT
TI  - Two-photon absorption in lanthanide complexes.
AU  - J Sztucki
AU  - W Strek
PY  - 1986
DO  - 10.1103/physrevb.34.3120
UR  - https://pubmed.ncbi.nlm.nih.gov/9940045/
ID  - 9940045
ER  -