@article{article832e7896,
title   = {Structural changes in the solar corona during the july 1991 eclipse},
author = {Zirker, J B and Koutchmy, S and Nitschelm, C and Stellmacher, G and Zimmermann, J P and Martinez, P and Kim, I S and Dzubenko, N I and Kurochka, L and Mararov, V and Fatianov, M},
year = {1992},
journal   = {Astronomy and Astrophysis}
}