N. Plongthong, G. Kumkanok, W. Sutthiprapa, and K. Kanittakul, “A case report: Gastroesophageal intussusception with megaesophagus in a Chihuahua puppy”, J. Mahanakorn Vet. Med., vol. 20, no. 2, pp. 49–58, Dec. 2025.