@inproceedings{inproceedingsb2a414cd,
title   = {Pyramidal hoppers design to elevated steel silos. [CD-ROM]},
author = {Araújo, Ernani Carlos de and Calil Júnior, Carlito},
year = {1998},
publisher = {Elsevier Science},
booktitle   = {World Conference on Steel in Construction}
}