TY - RPRT TI - A source for modulated light. AU - J J DENIER VAN DER GON AU - J STRACKEE AU - L H VAN DER TWEEL PY - 1958 DO - 10.1088/0031-9155/3/2/306 UR - https://pubmed.ncbi.nlm.nih.gov/13601144/ ID - 13601144 ER -