7ALLEN P M. Cities and regions as self-organiz- ing systems: models of complexity[M]. Rout- ledge. 1997.
8ALLEN P M, ENGELEN G, SANGL1ER M. Self-organizing systems and the "laws of so- cio-economic geography"[J]. European Journal of Operational Research, 1986 25(1): 127-140.
9ALLEN T. Hierarchy: perspectives for ecological complexity[M]//ALLEN T, THOMAS B. Start. Chicago: University of Chicago Press, 1982.
10ALONSO W. Location and land use: toward a general theory of land rent[M], Harvard Univary Press, 1964, 46(6): 855-873.