Szoltysek, Mikolaj Department 'Resilience and Transformation in Eurasia', MPI for Social Anthropology, Max Planck Society;
http://demogr.mpg.de/en/projects_publications/publications_1904/mpidr_working_papers/spatial_variation_in_household_structures_in_19th_century_germany_3973.htm (Any fulltext)
Szoltysek, M., Gruber, S., Klüsener, S., & Goldstein, J. R. (2010). Spatial variation in household structure in 19th-century Germany. MPIDR Working Papers, 30.