1. Categorical Data Analysis;Agresti,1990
2. Althaus R. (1999). Estudio sobre los métodos de detección de inhibidores en leche de oveja. Tesis Doctoral, Universidad Politécnica de Valencia, Spain, 309pp
3. Evaluation of the BRT method for detection of β-lactam antibiotics in ewe milk;Althaus;Milchwissenschaft,2001
4. Antibiotic depletion time and screening methods in milk of Manchega dairy ewes;Althaus;Options méditerranéennes,2001
5. Detection of milk antibiotic residues by use of screening tests and liquid chromatography after intramammary administration of amoxicillin or penicillin G in cows with clinical mastitis;Anderson;American Journal Veterinary Research,1998