00373nas a2200145   4500000000100000000000100001008004100002260002800043100002000071700001900091700002200110700001800132245006500150300001200215       2011                            d  bIACSIT Press, Singapore1 aPlamena Zlateva1 aLyubka Pashova1 aKrasimir Stoyanov1 aDimiter Velev00aFuzzy Logic Model for Natural Risk Assessment in SW Bulgaria  a109-113