Winyu Chitsamphandhvej, Wilasinee Phakdee, and Wilaiporn Thanasan, “A Headspace Solid Phase Microextraction Method for Using to Monitor Hexanal and Heptanal Content in Food Samples”, Agr. Nat. Resour., vol. 42, no. 5, pp. 206–212, Dec. 2008.