Who came up with this model "1. dysfunction (SDF) 2. instability 3. stabilization"?

Who came up with this model "1. dysfunction (SDF) 2. instability 3. stabilization"?

Who came up with this model "1. dysfunction (SDF) 2. instability 3. stabilization"?




A. Kirkaldy and Willis
B. Sharpless and Korr
C. Haavik and Murphy
D. Alan Fur and WC Lee







Answer: A