Photometric and spectroscopic observations of the outburst of the symbiotic star AG Draconis between March and June 2016
https://arxiv.org/abs/1612.07352
2016, Dezember 24, Ernst Pollmann
The Eruptive Stars Information Letter 2016-08
https://groups.yahoo.com/neo/groups/spectro-l/conversations/messages/18680
International Observing Campaign "Photometry and Spectroscopy of P Cygni"
E. Pollmann and Th. Bauer, JAAVSO Volume 40, 2012
AAVSO -- International Observing Campaign: Photometry and Spectroscopy of P Cygni
2016, Februar 11, Ernst Pollmann
The Long-Term Binary System VV Cep
https://konkoly.hu/pub/ibvs/6101/6156.pdf
2016, Februar 11, Ernst Pollmann
Monitoring the radial velocity of HeI 6678 of gamma Cas
http://ibvs.konkoly.hu/pub/ibvs/6101/6169.pdf
2016, Juni 06, Ernst Pollmann
Long-term radial velocity of the HeI 6678 line of zeta Tau