STRELITZ, S.; KISIELIUS, J. Über holomorphen Lösungen partieller Differentialgleichungen. Lithuanian Mathematical Journal, [S. l.], v. 8, n. 4, p. 811–825, 1968. DOI: 10.15388/LMJ.1968.20613. Disponível em: https://www.zurnalai.vu.lt/LMJ/article/view/20613. Acesso em: 8 jun. 2025.