@inproceedings{inproceedings72eb0f1f,
title   = {Network obervability: algorithms based on triangular factorization and path graph concepts - part ii},
author = {Bretas, Newton Geraldo and Deo, E C and Mori, R N},
year = {1996},
publisher = {Apca},
booktitle   = {Portuguese Conference on Automatic Control}
}