Ref1

https://www.researchgate.net/publication/335240704_The_Effect_of_Population_Density_and_Intercropping_with_Tomato_on_the_Growth_The_Effect_of_Population_Density_and_Intercropping_with_Tomato_on_the_Growth_and_Yield_of_Winged_Bean_Psophocarpus_tetragon