Hussein Mustapha Roussos G. Dimitrakopoulos HOSIM: A high-order stochastic simulation algorithm for generating three-dimensional complex geological patterns. 1242-1253 2011 37 Comput. Geosci. 9 https://doi.org/10.1016/j.cageo.2010.09.007 db/journals/gandc/gandc37.html#MustaphaD11