@article{oai:nagoya.repo.nii.ac.jp:00019570,
 author = {SAO, KAZUO},
 journal = {Proceedings of the Research Institute of Atmospherics, Nagoya University},
 month = {Mar},
 pages = {86--89},
 title = {ECHO TYPE WAVEFORMS WHICH APPEAR TO EXHIBIT THE EFFECT OF REFLECTIONS FROM TWO LAYERS IN E REGION},
 volume = {4},
 year = {1957}
}