TY - JOUR AU - Ludwig Oster AU - D. Hilton AU - W. Sieber BT - Astronomy and Astrophysics N1 - JILA Pub. 1500 PY - 1977 SP - 1 EP - 8 T2 - Astronomy and Astrophysics TI - Pulsar radiation patterns. I - Basic principles of data reduction and a two-frequency study of PSR 2016 + 28 UR - http://articles.adsabs.harvard.edu/full/1977A\%26A....57....1O VL - 57 ER -