5Ettinger S J ,Feldman E C. Textbook of veterinary internal medicine (5th)[M]. Pliladelphia: W B Saunders Company, 2000.
6Escolar E,Bellanato J. Analysis of feline urinary calculi and urethral plugs by infrared spectroscopy and scanning electron microscopy [J ]. Vet Rec, 2003, 152 : 625-628.
7Osborne C A,Lulich J P,Poizin D J ,et al. Medical dissolution and prevention of canine struvite urolithiasis. Twenty years of experience. Review[J]. Vet Clin North Am Small Anim Pract,1999,29(1):73-111.
8Lulich J P,Osborne C A,Nagode L A,et al. Evalution of urine and serum metablism in miniature schnauzers with calcium oxalate urolithiasis [J]. Ameri J Vet Res,1991,152:1583-1590.