1. Study on emission of decomposed chemicals of esters contained in PVC flooring and adhesive
2. US Patent 5,032,448,;Mendenhall,1991
3. US Patent 5,700,891,;Huver,1997
4. US Patent 8,070,908,;Tsuno,2011
5. US Patent Application Publication 2004/0137202,;Hamilton,2004