| [1] | Kleen,W.u.R,Muller,Laser,Springer-Verlag,Berlin,Heidelberg,New York 1969,P.72. |
| [2] | Boyd,G.D,u.J,P.Gordon.Confocal multimode resonator for millimeter through optical wavelength masers,Bell System Techn.Journal1961,Vol.40,P.489-508. |
| [1] | Kleen,W.u.R,Muller,Laser,Springer-Verlag,Berlin,Heidelberg,New York 1969,P.72. |
| [2] | Boyd,G.D,u.J,P.Gordon.Confocal multimode resonator for millimeter through optical wavelength masers,Bell System Techn.Journal1961,Vol.40,P.489-508. |