Tob. Reporter, 1986, 113-10, p. 60, ISSN.0361-5693 Device for determining reflective characteristics of tobacco leaves HRISTOZOV V.N.; MARCHEV Z.B.; RIBAROV H.M. US Patent 4,603,251. Inst. Techn. Cybern. Robot. Sofia....
Tob. Reporter, 1986, 113-11, p. 65, ISSN.0361-5693 Method and apparatus for tobacco sorting HRISTOZOV V.N.; RIBAROV H.M.; MARCHEV Z.B. US Patent 4,609,108. Inst. Tech. Cybern. Reflected light....