S. Kitora, S. Jinno, H. Toki, and M. Abe, “Relation of Integro-Partial Differential Equations with Delay Effect Based on the Maxwell Equations to the Heaviside and Pocklington Equations”, IEEE Transactions on Electromagnetic Compatibility Volume: 63, Issue: 4, August 2021

S. Kitora, S. Jinno, H. Toki, and M. Abe, “Relation of Integro-Partial Differential Equations with Delay Effect Based on the Maxwell Equations to the Heaviside and Pocklington Equations”, IEEE Transactions on Electromagnetic Compatibility Volume: 63, Issue: 4, August 2021