Rathje, W.L..
Time Capsules : The future's Lost and Found. - Oregon-XXU : The Leach Publishing Group, 1999. - p. 86-88 : il. - Bimestral - Vol. I, no. 6, (Nov./Dec. 1999) - Discovering Archaeology ; no. 6 . - Estados Unidos. The Leach Publishing Group. .
Commentary.
Art¡culo en inglés.
Time Capsules : The future's Lost and Found. - Oregon-XXU : The Leach Publishing Group, 1999. - p. 86-88 : il. - Bimestral - Vol. I, no. 6, (Nov./Dec. 1999) - Discovering Archaeology ; no. 6 . - Estados Unidos. The Leach Publishing Group. .
Commentary.
Art¡culo en inglés.