E. Squiers
Peterson, C. J., and E. R. Squiers. 1995. “Competition And Succession In An Aspen-White Pine Forest”. J. Ecol. 83: 449-458.
Squiers, E. R. 1989. “The Effects Of Seasonal Timing Of Disturbance On Species Composition In A First-Year Oldfield”. Bull. Torrey Bot. Club 116: 356-363.