@article {577,
	title = {Conting{\^e}ncia nas ci{\^e}ncias f{\'\i}sicas},
	journal = {Caderno IHU Id{\'e}ias Unisinos},
	volume = {68},
	year = {2007},
	pages = {1},
	attachments = {https://professor.ufrgs.br/sites/default/files/fernando-haas/files/contingencia_ciencias.pdf},
	author = {F. Haas}
}
