Feuerstack, M., Heintze, J., Lennert, P., Müller, B., Polenz, S., Schmidt, B., … Wiedner, C. (1991). Cosmic ray tracking: a new approach to high-energy γ-astronomy. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 310(1–2), 287–291. https://doi.org/10.1016/0168-9002(91)91045-w

Feuerstack, M., J. Heintze, P. Lennert, B. Müller, S. Polenz, B. Schmidt, J. Spitzer, et al. “Cosmic ray tracking: a new approach to high-energy γ-astronomy.” Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 310, no. 1–2 (December 1991): 287–91. https://doi.org/10.1016/0168-9002(91)91045-w.

Feuerstack M, Heintze J, Lennert P, Müller B, Polenz S, Schmidt B, et al. Cosmic ray tracking: a new approach to high-energy γ-astronomy. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1991 Dec;310(1–2):287–91.

Feuerstack, M., et al. “Cosmic ray tracking: a new approach to high-energy γ-astronomy.” Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 310, no. 1–2, Elsevier BV, Dec. 1991, pp. 287–91. Crossref, doi:10.1016/0168-9002(91)91045-w.

Feuerstack M, Heintze J, Lennert P, Müller B, Polenz S, Schmidt B, Spitzer J, Stadler B, Gamp S, Hofmann W, Kihm T, Knöppler J, Panter M, Povh B, Wiedner C. Cosmic ray tracking: a new approach to high-energy γ-astronomy. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. Elsevier BV; 1991 Dec;310(1–2):287–291.