Eric A. de Kemp Ernst M. Schetselaar Kevin B. Sprague 3-D symbolization of L-S fabrics as an aid to the analysis of geological structures. 52-63 2006 32 Comput. Geosci. 1 https://doi.org/10.1016/j.cageo.2005.04.006 db/journals/gandc/gandc32.html#KempSS06