@article{WACHTER:1986:EAIP:10.1080/0032472031000142076,
   AUTHOR = {Wachter, K.W.},
    TITLE = {Ergodicity and inverse projection},
  JOURNAL = {Population Studies},
   VOLUME = {40},
   NUMBER = {2},
     YEAR = {1986},
    PAGES = {275--287},
       ID = {info:doi/10.1080/0032472031000142076},
 ABSTRACT = {In ordinary demographic projection, the starting age structure of a
             population ceases to matter after a time, whatever changes the
             birth and death rates undergo within bounds. The inhomogeneous or
             `weak' ergodic theorem asserts this eventual independence of
             starting state. Does the same independence hold true for inverse
             projection? This paper proves that the answer is `yes' provided the
             model life-table family satisfies certain reasonable conditions,
             but that the answer can be `no', if more extreme life-table
             families are allowed. The inhomogeneous ergodic theorem for inverse
             projection proved here, and the counter-examples to its extension,
             have implications for the validation of aggregative reconstructions
             in historical demography and to the contemporary forecasting of
             sub-populations subject to constraints.},
   }

        

@incollection{WACHTER:1986:TGOEH,
   AUTHOR = {Wachter, K.W. and Hammel, E.A.},
    TITLE = {The genesis of experimental history},
   EDITOR = {Bonfield, Lloyd and Smith, Richard and Wrightson, Keith},
BOOKTITLE = {The World We Have Gained: Histories of Population and Social
             Structure},
     ISBN = {0631138714, 9780631138716},
     YEAR = {1986},
PUBLISHER = {Basil Blackwell},
  ADDRESS = {Oxford, UK},
     NOTE = {The book consists of essays presented to Peter Laslett on his
             seventieth birthday.},
  EDNOTES = {<bookdetails>Unable to find a TOC, hence no page numbers for this
             article},
   }