共 13 条
[11]
Phase contrast, a new method for the microscopic observation of transparent objects Part II
[J].
PHYSICA,
1942, 9
:974-986
[12]
Zernike F, 1935, PHYS Z, V36, P848
[13]
Zernike F., 1935, Z TECHN PHYS, V16, P454