HILL SHADING AND THE REFLECTANCE MAP

[31] Conte SD., 1972, ELEMENTARY NUMERICAL

[32] CRAWLEY BG, 1974, CANADIAN SURVEYOR, V28, P237

[33] DELACAILLE A, 1760, TRAITE OPTIQUE GRADA

[34] DELUCIS A, 1971, 31ST AM C SURV MAPP, P641

[35] DOUGLAS D, 1971, REV GEOGRAPHIE MONTR, V26, P102

[36] ECKERT M, 1965, KARTENWISSENSCHAFT F, V2

[37] ECKERT M, 1962, KARTENWISSENSCHAFT F, V1

[38] FEDORETZ VA, 1952, PUBL KHARKOV OBS, V2, P49

[39] FESENKOV V, 1962, PHYSICS ASTRONOMY MO, P99

[40] Fesenkov V.G., 1929, ASTRON ZH, V5, P219

[31] Conte SD., 1972, ELEMENTARY NUMERICAL

[32] CRAWLEY BG, 1974, CANADIAN SURVEYOR, V28, P237

[33] DELACAILLE A, 1760, TRAITE OPTIQUE GRADA

[34] DELUCIS A, 1971, 31ST AM C SURV MAPP, P641

[35] DOUGLAS D, 1971, REV GEOGRAPHIE MONTR, V26, P102

[36] ECKERT M, 1965, KARTENWISSENSCHAFT F, V2

[37] ECKERT M, 1962, KARTENWISSENSCHAFT F, V1

[38] FEDORETZ VA, 1952, PUBL KHARKOV OBS, V2, P49

[39] FESENKOV V, 1962, PHYSICS ASTRONOMY MO, P99

[40] Fesenkov V.G., 1929, ASTRON ZH, V5, P219