title: Percolation and phase transitions.
authors.forename: Henry E
authors.initials: HE
authors.lastname: Fessler
authors.forename: Peter T
authors.initials: PT
authors.lastname: Macklem
mesh_terms: D003094:Collagen / Q000378:metabolism*; D018450:Disease Progression; D004549:Elastin / Q000378:metabolism*; D006801:Humans; D008171:Lung Diseases / Q000378:metabolism*; D008954:Models, Biological; D017711:Nonlinear Dynamics