(1991). SLOPE/W: For slope stability analysis for Windows 95 and NT : getting started guide (Version 4.0.). Alberta: Geo-Slope Office International Ltd.
Παραπομπή Chicago StyleSLOPE/W: For Slope Stability Analysis for Windows 95 and NT : Getting Started Guide. Version 4.0. Alberta: Geo-Slope Office International Ltd, 1991.
Παραπομπή MLASLOPE/W: For Slope Stability Analysis for Windows 95 and NT : Getting Started Guide. Version 4.0. Alberta: Geo-Slope Office International Ltd, 1991.
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