Afonin, S. A.; Barinova, S. S.; Krassilov, V. A. (2001). A bloom of Tympanicysta Balme (green algae of zygnematalean affinities) at the Permian–Triassic boundary. Geodiversitas. 23: 481-487.
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Afonin, S. A.; Barinova, S. S.; Krassilov, V. A.
2001
A bloom of Tympanicysta Balme (green algae of zygnematalean affinities) at the Permian–Triassic boundary