1. Gas Chromatog. Abstr., Subject Index, Sect. 4.2, “Solid Support”.
2. H. Eschrich and W. Drent, Bibliography on Applications of Reversed-Phase Chromatography to Inorganic Chemistry and Analysis, Eurochemic Rept. ETR-211, Nov. 1967.
3. Chromatography of some lipids on polytetrafluoroethylene
4. B. Grayson (Chemplast Inc., Wayne, N.J., U.S.A.), Feb. 11, 1969, personal communication.