1. Soil bulk density estimation methods: a review;Al-Shammary;Pedosphere,2018
2. Comparison of soil water content estimation equations using Ground Penetrating Radar;Anbazhagan;J. Hydrol.,2020
3. ASTM, 1963. Standard test method for particle-size analysis of soils. D422–63, West Conshohocken, PA.
4. ASTM, 2012. Standard test method for water content and density of soil in situ by time domain reflectometry (tdr). D6780M-12, West Conshohocken, PA.
5. ASTM, 2012. Standard test methods for laboratory compaction characteristics of soil using modified effort. D1557-12, West Conshohocken, PA.