@article{articlef6a7466b,
title   = {Ultrasonic measurement of density of liquids flowing in tubes},
author = {Adamowski, Júlio Cezar and Buiochi, Flávio and Sigelmann, R. A.},
year = {1998},
doi = {10.1109/58.646909},
journal   = {IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control}
}