@inbook {sfl80, title = {Understanding Perceived Risk}, booktitle = {Societal risk assessment: how safe is safe enough? New York:}, year = {1980}, publisher = {Plenum Press}, organization = {Plenum Press}, author = {Slovic, P. and Fischhoff, B. and Lichtenstein, S.}, editor = {Schwing, R. and Albers, W} }