According to Wikipedia, Charles-Jean Étienne Gustave Nicolas, baron de la Vallée Poussin was a Belgian mathematician. He is best known for proving the prime number theorem. The King of Belgium ennobled him with the title of baron.
Charles Jean de la Vallée Poussin's Published Works
Number of citations in a given year to any of this author's works
Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author
Published Papers
Sur l'équation différentielle linéaire du secondordre. Détermination d'une intégrale par deux valeursassignées. Extension aux équations d'ordre n (85)