• Author: Helm, B. E. Gwinner
• Title: Timing of postjuvenal molt in African (Saxicola torquata axillaris) and European (Saxicola torquata rubicola) stonechats: Effects of genetic and environmental factors
• Year: 1999
• Reference Type: Journal Article
• Journal/Book Title: Auk
• Volume: 116
• Issue: 3
• Pages: 589-603
• Date of Publication: Monday, 20 December 1999