1. Parasitic bronchitis and pneumonia;Breeze;Vet. Clin. North Am. Food Anim. Pract.,1985
2. Survey on lungworm in adult cattle;David;Vet. Rec.,1997
3. Lungworms. Encyclopedia of Dairy Sciences;Eysker,2002
4. The prevalence of patent lungworm infections in herds of dairy cows in The Netherlands;Eysker;Vet. Parasitol.,1993
5. Lungwoem ourbreaks in adult dairy cows: estimating economic losses and lessons to be learned;Holzhauer;Vet. Rec.,2011