Studies　on　permissible　levels　of　breathing　resistance　for　aircraft　oxygen　equipment（Review）[J]. 解放军医学杂志（英文版）, 1994,(2).

[1]马瑞山.Studies　on　permissible　levels　of　breathing　resistance　for　aircraft　oxygen　equipment（Review）[J].Journal of Medical Colleges of PLA,1994(02):123-126.

Studies　on　permissible　levels　of　breathing　resistance　for　aircraft　oxygen　equipment（Review）[J]. 解放军医学杂志（英文版）, 1994,(2). DOI：

[1]马瑞山.Studies　on　permissible　levels　of　breathing　resistance　for　aircraft　oxygen　equipment（Review）[J].Journal of Medical Colleges of PLA,1994(02):123-126. DOI：