FR2816760-A1  PATENT ABSTRACTS OF JAPAN vol. 1996, no. 11, 29 novembre 1996 (1996-11-29) -& JP 08 195215 A (TOYOTA MOTOR CORP), 30 juillet 1996 (1996-07-30);  PATENT ABSTRACTS OF JAPAN vol. 1997, no. 05, 30 mai 1997 (1997-05-30) -& JP 09 019678 A (TOKYO GAS CO LTD), 21 janvier 1997 (1997-01-21);  STASCHEWSKI D: "Internal humidifying of pem fuel cells" INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,GB,ELSEVIER SCIENCE PUBLISHERS B.V., BARKING, vol. 21, no. 5, 1 mai 1996 (1996-05-01), pages 381-385, XP004041026 ISSN: 0360-3199;  PATENT ABSTRACTS OF JAPAN vol. 1997, no. 05, 30 mai 1997 (1997-05-30) -&JP 09 019678 A (TOKYO GAS CO LTD), 21 janvier 1997 (1997-01-21);  PATENT ABSTRACTS OF JAPAN vol. 1996, no. 11, 29 novembre 1996 (1996-11-29) -&JP 08 195215 A (TOYOTA MOTOR CORP), 30 juillet 1996 (1996-07-30)WO200241427-A1  PATENT ABSTRACTS OF JAPAN vol. 1996, no. 11, 29 novembre 1996 (1996-11-29) -& JP 08 195215 A (TOYOTA MOTOR CORP), 30 juillet 1996 (1996-07-30);  PATENT ABSTRACTS OF JAPAN vol. 1997, no. 05, 30 mai 1997 (1997-05-30) -& JP 09 019678 A (TOKYO GAS CO LTD), 21 janvier 1997 (1997-01-21);  STASCHEWSKI D: "Internal humidifying of pem fuel cells" INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,GB,ELSEVIER SCIENCE PUBLISHERS B.V., BARKING, vol. 21, no. 5, 1 mai 1996 (1996-05-01), pages 381-385, XP004041026 ISSN: 0360-3199;  PATENT ABSTRACTS OF JAPAN vol. 1997, no. 05, 30 mai 1997 (1997-05-30) -&JP 09 019678 A (TOKYO GAS CO LTD), 21 janvier 1997 (1997-01-21);  PATENT ABSTRACTS OF JAPAN vol. 1996, no. 11, 29 novembre 1996 (1996-11-29) -&JP 08 195215 A (TOYOTA MOTOR CORP), 30 juillet 1996 (1996-07-30);  STASCHEWSKI D: "Internal humidifying of pem fuel cells", INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,GB,ELSEVIER SCIENCE PUBLISHERS B.V., BARKING, vol. 21, no. 5, 1 May 1996 (1996-05-01), pages 381 - 385, XP004041026, ISSN: 0360-3199;  PATENT ABSTRACTS OF JAPAN vol. 1997, no. 05 30 May 1997 (1997-05-30);  PATENT ABSTRACTS OF JAPAN vol. 1996, no. 11 29 November 1996 (1996-11-29)US6821662-B1  D. Staschewski, "Internal humidifying of pem fuel cells", International Journal of Hydrogen Energy, GB, Elsevier Science Publishers B.V., Barking, vol. 21, No. 5, May 1, 1996, pp 381-385.