Momchilova, A.; Pankov, R.; Krastev, P.; Markovska, T.; Arabadjiev, B.; Krastev, N.; Vassileva, E.; Krastev, D.; Tonev, D. Quercetin Affects Ceramide But Not Sphingosine-1-Phosphate in Ras-Transformed 3T3 Fibroblasts. C. R. Acad. Bulg. Sci. 2023, 76, 605-611.