1. Forms and reactions of organic sulfur compounds in soils;Freney,1986
2. The Nature and Properties of Soils;Weil,2017
3. Soil sulfur cycling in temperate agricultural systems;Eriksen;Adv. Agron.,2009
4. Sulfur in soils;Scherer;J. Plant Nutr. Soil Sci.,2009
5. Sulfur forms and cycling processes in soil and their relationship to sulfur fertility;Schoenau,2008