TY - JOUR ID - Kruse1987a T1 - On the Variance of Random Sets A1 - Kruse, Rudolf JA - Journal of Mathematical Analysis and Applications Y1 - 1987 VL - 122 IS - 2 SP - 469 EP - 473 SN - 0022-247X M2 - doi: 10.1016/0022-247X(87)90277-0 ER -