1. https://www.marketsandmarkets.com/Market-Reports/phase-transfer-catalyst-market-70725388.html
2. Influence d’un chlorure d’ammonium quaternaire sur des réactions entre composés à hydrogène mobile et dérivés chlorés (Influence of quaternary ammonium chloride on reaction of CH acids with haloalkanes);Jarrousse;CR Acad. Sci. Paris,1951
3. Reakcje anionów organicznych. I. Katalityczne etylowanie fenyloacetonitrylu w środowisku wodnym (Reactions of organic anions. I. Catalytic ethylation of phenylacetonitrile in aqueous medium);Mąkosza;Rocz. Chem.,1965
4. Reactions of organic anions. XI. Catalytic alkylation of indene