- Anwar, Zobia., Irshad, Muhammad., Mahmood, Qaisar., Hafeez, Farhan., Bilal, Muhammad. (2024) Nutrient uptake and growth of spinach as affected by cow manure co-composted with poplar leaf litter. International Journal of Recycling of Organic Waste in Agriculture, 6(1), 79 - 88. https://doi.org/10.1007/s40093-017-0154-x