International scientific publications, by John Browne KI6KY

http://www.journals.elsevierhealth.com/periodicals/eep/article/0168-5597(92)90053-E/abstract
http://www.journals.elsevierhealth.com/periodicals/eep/article/0168-5597(93)90024-J/abstract<
http://www.journals.elsevierhealth.com/periodicals/eep/article/0168-5597(89)90057-9/abstract