@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 },

}