I don't much care for Google scholar, its hard for me to use, and slow. But my internet pipe is very slow, other people may have better luck. When I want a peer reviewed journal, I just use a Google search for the title, then I go to my local university library and download those journals they have available. I don't know if DMSO is the best reagent to use, I know humans use it medicinally, I don't know if it can hurt plant tissue or not. Where did you first get the idea to experiment with plant growth hormones, and what changes in the plants are you hoping to induce?