1. Oil of cloves, laurel, lavender, peppermint;Calnan;Contact Dermatitis Newsletter,1970a
2. Oil of Patchouli;Calnan;Contact Dermatitis Newsletter,1970b
3. Oil of Cinnamon;Calnan;Contact Dermatitis Newsletter,1970c
4. Hypersensitivity to balsam of pine and spruce;Fregert;Archives of dermatology,1963
5. Untersuchungen über die Terpentinöl - Allergie;Grimm;Berufsdermatosen,1968