1. Conde-Salazar , L. 1977 III Meeting of Contact Dermatitis Investigative Spanish Group, Madrid, Spain
2. Berufskontaktekzem durch Vitamin K;Jirasek;Hautarzt,1965
3. Romaguera , C. Grimalt , F. 1978 V Meeting of Contact Dermatitis Investigative Spanish Group
4. Rust , S. 1954 Jirasek & Schwank