Röttger, J.; Liu, C. H.; Chao, J. K.; Chen, A. J.; Chu, Y. H.; Fu, I.-J.; Huang, C. M.; Kiang, Y. W.; Kuo, F. S.; Lin, C. H.et al.; Pan, C. J.: The Chung-Li VHF-radar: Technical layout and a summary of initial results. Radio Science 25, pp. 487 - 502 (1990)
Röttger, J.; Liu, C. H.; Chao, J. K.; Chen, A. J.; Pan, C. J.; Fu, I.-J.: Spatial interferometer measurements with the Chung-Li VHF radar. Radio Science 25, pp. 503 - 515 (1990)
Röttger, J.; Rietveld, M. T.; La Hoz, C.; Hall, T.; Kelley, M. C.; Swartz, W. E.: Polar mesosphere summer echoes observed with the EISCAT 933-MHz radar and the CUPRI 46.9-MHz radar, their similarity to 224-MHz radar echoes and their relation to turbulence and electron density profiles. Radio Science 25, pp. 671 - 687 (1990)
Chu, Y.-H.; Hsu, T. S.; Liu, C. H.; Chao, J. K.; Röttger, J.: Characteristics of VHF radar echo power in the Taiwan area. Handbook for MAP 28, pp. 115 - 120 (1989)
Chu, Y.-H.; Woodman, R. F.; Liu, C. H.; Chao, J. K.; Röttger, J.: Using vertically pointing broad beam to measure atmospheric aspect sensitivity of VHF radar echoes. Handbook for MAP 28, pp. 89 - 99 (1989)
Franke, S. J.; La Hoz, C.; Röttger, J.; Liu, C. H.: Frequency domain interferometry of polar mesosphere summer echoes with the EISCAT VHF radar. Handbook for MAP 28, pp. 210 - 221 (1989)
Fu, I. J.; Liu, C. H.; Röttger, J.; Chao, J. K.: Subtropical middle atmosphere dynamics observed by the Chung Li radar. Handbook for MAP 27, pp. 423 - 426 (1989)
Hocking, W. K.; May, P.; Röttger, J.: Interpretation, reliability and accuracies of parameters deduced by the spaced antenna radar method in middle atmosphere applications. Pure Appl. Geophys. (PAGEOPH) 130, pp. 571 - 604 (1989)
Jones, G. O. L.; Winser, K. J.; Röttger, J.; La Hoz, C.; Franke, S. J.: A statistical review of the EISCAT PMSE 1988 data. Handbook for MAP 28, pp. 126 - 130 (1989)
La Hoz, C.; Röttger, J.; Rietveld, M.; Wannberg, G.; Franke, S. J.: The status and planned developments of EISCAT in mesosphere D-region experiments. Handbook for MAP 28, pp. 476 - 488 (1989)
Röttger, J.: Mean, tidal, and fluctuating winds in the middle atmosphere and lower thermosphere observed during MAP/WINE in northern Scandinavia. Handbook for MAP 27, pp. 251 - 270 (1989)
Röttger, J.: The interpretation of MST radar echoes: The present knowledge of the scattering/reflection and the irregularity generation mechanisms. Handbook for MAP 28, pp. 68 - 82 (1989)
Röttger, J.: The instrumental principles of MST radars and incoherent scatter radars and the configuration of radar system hardware. Handbook for MAP 30, pp. 54 - 113 (1989)
Röttger, J.; La Hoz, C.: Fine-structure of Doppler spectra of polar mesosphere summer echoes (PMSE) observed with the EISCAT 224-MHz radar. Handbook for MAP 28, pp. 107 - 114 (1989)
Röttger, J.; La Hoz, C.; Franke, S. J.; Liu, C. H.: Gravity wave steepening and tilting detected in high resolution Doppler spectra of polar mesosphere summer echoes (PMSE) observed with the EISCAT 224 MHz radar. Handbook for MAP 28, pp. 267 - 277 (1989)
The dwarf planet is a bizarre, cryovolcanic world. However, the organic deposits discovered on its surface so far are unlikely to originate from its interior.
The Uranian magnetic field is more expansive than previously thought, according to newly analyzed data from Voyager 2, making it easier to search for moons with oceans.