WO2006089936-A1  DATABASE INSPEC 0xC3,0x830xC2,0x84Online0xC3,0x830xC2,0x9C THE INSTITUTION OF ELECTRICAL ENGINEERS, STEVENAGE, GB; 16. M{rz 1993 (1993-03-16), MANSOUR B A: &quot;Electrical and thermoelectric properties of In and Cd doped Cu1.8S&quot; XP002379634 Database accession no. 4402234 0x26 Physica Status Solidi A Germany, Bd. 136, Nr. 1, 16. M{rz 1993 (1993-03-16), Seiten 153-159, ISSN: 0031-8965;  DATABASE INSPEC [Online] THE INSTITUTION OF ELECTRICAL ENGINEERS, STEVENAGE, GB; 16. M rz 1993 (1993-03-16), MANSOUR B A: &quot;Electrical and thermoelectric properties of In and Cd doped Cu1.8S&quot; XP002379634 Database accession no. 4402234 &amp; Physica Status Solidi A Germany, Bd. 136, Nr. 1, 16. M rz 1993 (1993-03-16), Seiten 153-159, ISSN: 0031-8965;  DATABASE INSPEC [Online] THE INSTITUTION OF ELECTRICAL ENGINEERS, STEVENAGE, GB; 16. Maerz 1993 (1993-03-16), MANSOUR B A: "Electrical and thermoelectric properties of In and Cd doped Cu1.8S" XP002379634 Database accession no. 4402234 & Physica Status Solidi A Germany, Bd. 136, Nr. 1, 16. Maerz 1993 (1993-03-16), Seiten 153-159, ISSN: 0031-8965;  HASAKA M ET AL: &quot;Thermoelectric properties of Cu-Sn-S&quot; ENERGY CONVERSION AND MANAGEMENT, ELSEVIER SCIENCE PUBLISHERS, OXFORD, GB, Bd. 38, Nr. 9, Juni 1997 (1997-06), Seiten 855-859, XP004056692 ISSN: 0196-8904;  HASAKA M ET AL: "Thermoelectric properties of Cu-Sn-S" ENERGY CONVERSION AND MANAGEMENT, ELSEVIER SCIENCE PUBLISHERS, OXFORD, GB, Bd. 38, Nr. 9, Juni 1997 (1997-06), Seiten 855-859, XP004056692 ISSN: 0196-8904;  DATABASE INSPEC 0xC3,0x830xC2,0x84Online0xC3,0x830xC2,0x9C THE INSTITUTION OF ELECTRICAL ENGINEERS, STEVENAGE, GB; 1968, ABDULLAEV G B ET AL: &quot;Investigation of the electric properties of Cu2S single crystals&quot; XP002379633 Database accession no. 1968A22585 0x26 Physica Status Solidi Germany, Bd. 26, Nr. 1, 1968, Seiten 65-68,;  DATABASE INSPEC [Online] THE INSTITUTION OF ELECTRICAL ENGINEERS, STEVENAGE, GB; 1968, ABDULLAEV G B ET AL: "Investigation of the electric properties of Cu2S single crystals" XP002379633 Database accession no. 1968A22585 & Physica Status Solidi Germany, Bd. 26, Nr. 1, 1968, Seiten 65-68,;  DATABASE INSPEC [Online] THE INSTITUTION OF ELECTRICAL ENGINEERS, STEVENAGE, GB; 1968, ABDULLAEV G B ET AL: &quot;Investigation of the electric properties of Cu2S single crystals&quot; XP002379633 Database accession no. 1968A22585 &amp; Physica Status Solidi Germany, Bd. 26, Nr. 1, 1968, Seiten 65-68,