@article{article89c35276,
title   = {Cosmic rays in the classroom},
author = {Souza, Vitor de and Barros, Marcelo Alves and Marques Filho, Edson Cesar and Garbelotti, Cristiano Rodrigo and João, Herbert Alexandre},
year = {2013},
doi = {10.1088/0031-9120/48/2/238},
journal   = {Physics Education}
}