@misc{misc47d4fe08,
title   = {Trend-surface analysis of Carboniferous and Permian thickness data from Paraná Basil},
author = {Landim, Paulo Milton Barbosa and Fúlfaro, Vicente José},
year = {1972},
publisher = {A Academia},
booktitle   = {Simpósio Internacional sobre os sistemas Carbonífero e Permiano na América do Sul}
}