Jotsaroop, Kaur, and Sundaram Thangavelu. “L^p Estimates for the Wave Equation Associated to the Grushin Operator”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 13, no. 3 (September 30, 2014): 775-794. Accessed February 20, 2026. https://journals.sns.it/index.php/annaliscienze/article/view/353.