Citation: Sr. Trammell et Rw. Goodrich, HUBBLE-SPACE-TELESCOPE AND GROUND-BASED IMAGING OF THE BIPOLAR PROTOPLANETARY NEBULA M1-92 - EVIDENCE FOR A COLLIMATED OUTFLOW, The Astrophysical journal, 468(2), 1996, pp. 107
Citation: Sr. Trammell et al., EVIDENCE FOR THE EARLY-ONSET OF ASPHERICAL STRUCTURE IN THE PLANETARY-NEBULA FORMATION PROCESS - SPECTROPOLARIMETRY OF POST-AGB STARS, The Astronomical journal, 108(3), 1994, pp. 984-997
Citation: Sr. Trammell et al., SPECTROPOLARIMETRY OF THE BIPOLAR PLANETARY-NEBULA M2-9, Revista Mexicana de Astronomia y Astrofisica, 27, 1993, pp. 199-202