@inproceedings{inproceedingsac3a040d,
title   = {Singularity points and vanishing tetrads in factor analysis},
author = {Abensur, Themis C. and Castro, Mário de and Davier, Alina A. von},
year = {2017},
publisher = {Associação Brasileira de Estatística - ABE},
booktitle   = {Workshop on Probabilistic and Statistical Methods - WPSM}
}