Lightning currents and their variations.

[1] FOUST CM, 1934, GEN ELECT REV, V37

[2] FOUST CM, 1931, GEN ELECT REV, V34

[3] GRUNEWALD H, 1934, ELEKTROTECH Z, V21, P505

[4] LEWIS WW, 1934, ELECT ENG AUG

[5] NORINDER H, 1934, J FRANKLIN I, V218

[6] POCKELS F, METEOROLOG Z, V15, P141

[7] Pockels F., 1901, METEOROL Z, V18, P40

[1] FOUST CM, 1934, GEN ELECT REV, V37

[2] FOUST CM, 1931, GEN ELECT REV, V34

[3] GRUNEWALD H, 1934, ELEKTROTECH Z, V21, P505

[4] LEWIS WW, 1934, ELECT ENG AUG

[5] NORINDER H, 1934, J FRANKLIN I, V218

[6] POCKELS F, METEOROLOG Z, V15, P141

[7] Pockels F., 1901, METEOROL Z, V18, P40