Separata: The nature of the penetrating particles in extensive air showers. Proceedings of the Royal Irish Academy, v.54, sec.A, nº.7, Dublin University Press Ltda, pp.115-123.

• Documento

D. D. Millar. The nature of the penetrating particles in extensive air showers. Proceedings of the Royal Irish Academy, v.54, sec.A, nº.7, Dublin University Press Ltda, pp.115-123.

Separata: The transition effect of extensive air showers. Il Nuovo Cimento, v.VIII, nº.4, pp.279-288.

• Documento

D. D. Millar. The transition effect of extensive air showers. Il Nuovo Cimento, v.VIII, nº.4, pp.279-288.