@Article{ CHECA_COMPANY_SANDOVAL_WITSCHI:225-235,
author = { ANTONIO GERARDO CHECA GONZALEZ and MIGUEL COMPANY SEMPERE and JOSÉ SANDOVAL GABARRÓN and ALFREDO WITSCHI CESTARI } ,
title = { COVARIATION OF MORPHOLOGICAL CHARACTERS IN THE TRIASSIC AMMONOID CZEKANOWSKITES RIEBERI },
journal = { LETHAIA },
year = { 1997 },
volume = { 29 },
issn = { 0024-1164 },
pages = { 225-235 },
}