Porck, H. (1996). Mass deacidification. An update of possibilities and limitations. DEZArchived 2008-03-11 at the Wayback Machine. URL accessed December 2, 2007.
Porck, H. (1996). Mass deacidification. An update of possibilities and limitations. BattelleArchived 2008-03-11 at the Wayback Machine. URL accessed December 1, 2007.
Porck, H. (1996). Mass deacidification. An update of possibilities and limitations. Wei T'o and SableArchived 2006-07-19 at the Wayback Machine. URL accessed October 5, 2007.
Porck, H. (1996). Mass deacidification. An update of possibilities and limitations. BookKeeperArchived 2006-07-19 at the Wayback Machine. URL accessed December 1, 2007.
Porck, H. (1996). Mass deacidification. An update of possibilities and limitations. DEZArchived 2008-03-11 at the Wayback Machine. URL accessed December 2, 2007.
Porck, H. (1996). Mass deacidification. An update of possibilities and limitations. BattelleArchived 2008-03-11 at the Wayback Machine. URL accessed December 1, 2007.
Porck, H. (1996). Mass deacidification. An update of possibilities and limitations. Wei T'o and SableArchived 2006-07-19 at the Wayback Machine. URL accessed October 5, 2007.
Porck, H. (1996). Mass deacidification. An update of possibilities and limitations. BookKeeperArchived 2006-07-19 at the Wayback Machine. URL accessed December 1, 2007.