TY - BOOK AU - Meade,M.L. TI - Lock-in amplifiers: principles and applications T2 - IEE Electrical measurement series SN - 090604894X U1 - 621.38/043 PY - 1983/// CY - London PB - P. Peregrinus on behalf of the Institution of Electrical Engineers KW - Lock-in amplifiers KW - Signal processing ER -