Vibration isolators for portable vibrating tools Part 2: a rockdrill of leg-type : T. Miwa, Y. Yonekawa, A. Nara and K. Kanada 1979 Industrial Health17, 103–122. (14 pages, 11 figures, 3 tables, 3 references)doi:10.1016/0022-460X(81)90482-XELSEVIER...