@article{woodward1968the, title = {The Scanning Electron Microscope-A New Tool in Disc-Recording Research}, author = {Woodward, J. G. and Coutts, M. D. and Levin, E. R.}, journal = {J. Audio Eng. Soc}, volume = {16}, number = {3}, pages = {258--265}, year = {1968}, url = {https://www.aes.org/e-lib/browse.cfm?elib=1645} }