Published in Scopus, in 1979, in volume 2, pages 126-132

Published in Scopus, in 1979, in volume 2, pages 134-136

Published in Scopus, in 1979, in volume 3, pages 1-8

Published in Scopus, in 1979, in volume 3, pages 9-13

Published in Scopus, in 1979, in volume 3, pages 14-18

Published in Scopus, in 1979, in volume 3, pages 19-25

Published in Scopus, in 1979, in volume 3, pages 26

Published in Scopus, in 1979, in volume 3, pages 27-28

Published in Scopus, in 1979, in volume 3, pages 28-29

Published in Scopus, in 1979, in volume 3, pages 29

Published in Scopus, in 1979, in volume 3, pages 33-47

Published in Scopus, in 1979, in volume 3, pages 48-53

Published in Scopus, in 1979, in volume 3, pages 54-57

Published in Scopus, in 1979, in volume 3, pages 58-59

Published in Scopus, in 1979, in volume 3, pages 59-60

Published in Scopus, in 1979, in volume 3, pages 68-73

Published in Scopus, in 1979, in volume 3, pages 74-78

Published in Scopus, in 1979, in volume 3, pages 79-80

Published in Scopus, in 1979, in volume 3, pages 80-81

Published in Scopus, in 1979, in volume 3, pages 81-92

Published in Scopus, in 1979, in volume 3, pages 93-100

Published in Scopus, in 1979, in volume 3, pages 101-102

Published in Scopus, in 1979, in volume 3, pages 103-104