Author:

Retallack,G.J.;Veevers,J.J.

Year:

1996

Title:

Global coal gap between Permian-Triassic extinction and Middle Triassic recovery of peat-forming plants.

Reference:

Retallack,G.J. et al. (1996) Global coal gap between Permian-Triassic extinction and Middle Triassic recovery of peat-forming plants. Geological Society of America Bulletin Vol. 108 # 2 P. 195- 207

Google Academy:

try to search by title in english