@article {20673,
	title = {The PbO2-PbO-V2O5 system in air},
	journal = {Thermochimica Acta},
	volume = {156},
	year = {1989},
	pages = {211-224},
	author = {Y.M. Kassem and A.N. Mahdy and M. F. Abadir}
}
