Grutters JC, van den Borsch JMM. Connective Tissue Disorders. Clinical Respiratory Medicine. Third ed2008. p. 713–27.
Fathi M, Lundberg IE. Interstitial lung disease in polymyositis and dermatomyositis. Curr Opin Rheumatol. 2005;17(6):701–6.

Grutters JC, van den Borsch JMM. Connective Tissue Disorders. Clinical Respiratory Medicine. Third ed2008. p. 713–27.
Fathi M, Lundberg IE. Interstitial lung disease in polymyositis and dermatomyositis. Curr Opin Rheumatol. 2005;17(6):701–6.