| [1] | Opt,Lett,1980,Vol.5,No.2,P.555. |
| [2] | Opt,Engng,1985,Vol.24,No.6,P.944. |
| [3] | Appl,Opt.,1984,Vol.23,No.14,P.2241. |
| [4] | AIAAJ.,1982,Vol.20,No.4,P.820, |
| [1] | Opt,Lett,1980,Vol.5,No.2,P.555. |
| [2] | Opt,Engng,1985,Vol.24,No.6,P.944. |
| [3] | Appl,Opt.,1984,Vol.23,No.14,P.2241. |
| [4] | AIAAJ.,1982,Vol.20,No.4,P.820, |