Gaya APA

Ryden, N. (2006). A combined multichannel impact echo and surface wave analysis scheme for non-destructive thickness and stiffness evaluation of concrete slabs . : NDT Inc..

Gaya MLA

Ryden, Nils. "A combined multichannel impact echo and surface wave analysis scheme for non-destructive thickness and stiffness evaluation of concrete slabs". : NDT Inc., 2006. Computer Software.