Verigin, M. I., Shutte, N. M., Galeev, A. A., Gringauz, K. I., Kotova, G. A., Remizov, A. P., Rosenbauer, H., Hemmerich, P., Livi, S., Richter, A. K., Apathy, I., Szego, K., Riedler, W., Schwingenshuh, K., Steller, M., & Yeroshenko, Y. G. (1991). Ions of planetary origin in the Martian magnetosphere (Phobos 2/Taus experiment). Planetary and Space Science, 39, 131-137.