TY - RPRT TI - Nonlinear optical technique for precise retardation measurements. AU - Stefano Cattaneo AU - Oliver Zehnder AU - Peter Günter AU - Martti Kauranen PY - 2002 DO - 10.1103/physrevlett.88.243901 UR - https://pubmed.ncbi.nlm.nih.gov/12059299/ ID - 12059299 ER -