@misc{1156716, author = {C J Chilton}, title = {An atlas of solar flare effects observed on long VLF paths during 1961:}, year = {1964}, month = {1964-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.TN.210}, language = {en}, }