20th Stellar Conference of the Czech and Slovak Astronomical Institutes. Proceedings.
20th Texas symposium
21 centimeter absorption at z=0.395 in the quasar 1229-021
21 Centimeter Fluctuations from Cosmic Gas at High Redshifts
21 centimeter H I absorption at Z = 0.437 against the extended radio structure of 3C 196
21 cm Absorption Studies with the Square Kilometer Array
21 cm fluctuations from inhomogeneous X-ray heating before reionization
21 CM H I absorption in NGC 1275
21 cm Intensity Mapping
21 cm line Observations Near the Galactic Plane in the Galactic Longitude Interval 339° - 72°
21 CM line observations of cD galaxies
21 CM maps of Jupiter's radiation belts from all rotational aspects
21 cm observation of LSS at z~1 Instrument sensitivity and foreground subtraction
21 cm radiation - a new probe of variation in the fine structure constant
21 cm radiation: A new probe of fundamental physics
21 cm Signals from Early Ionizing Sources
21 cm Tomography of the High-Redshift Universe with the Square Kilometer Array
21 VUL - A new luminous long period Delta Scuti star
21 years of Timing PSR B1509-58
21-CENTIMETER Absorption at ≍ = 0.692 in the Quasar 3c 286