Photometric and spectroscopic observations of the outburst of the symbiotic star AG Draconis between March and June 2016
https://arxiv.org/abs/1612.07352
Ernst Pollmann
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
Ernst Pollmann
The Long-Term Binary System VV Cep
https://konkoly.hu/pub/ibvs/6101/6156.pdf
Ernst Pollmann
Monitoring the radial velocity of HeI 6678 of gamma Cas
http://ibvs.konkoly.hu/pub/ibvs/6101/6169.pdf
Ernst Pollmann
Long-term radial velocity of the HeI 6678 line of zeta Tau
Photometry and Spectroscopy of P Cygni: Periodic Variation of the Intrinsic Hα-line Flux
https://app.aavso.org/media/jaavso/3590_gnbS8Ih.pdf
Ernst Pollmann
Spectroscopic Monitoring of the 2017–2019 Eclipse of VV Cephei
https://app.aavso.org/media/jaavso/3583_adrRCxe.pdf
Ernst Pollmann