References: 4th International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM2017, www.sgemvienna.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-93-3 / ISSN 2367-5659, March 28-31, Book1, Vol.1, 847-854 pp, DOI:10.5593/SGEMSOCIAL2017/HB11/S12.106
References: 4th International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM2017, www.sgemvienna.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-93-3 / ISSN 2367-5659, March 28-31, Book1, Vol.1, 855-862 pp, DOI:10.5593/SGEMSOCIAL2017/HB11/S12.107
References: 4th International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM2017, www.sgemvienna.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-93-3 / ISSN 2367-5659, March 28-31, Book1, Vol.1, 863-870 pp, DOI:10.5593/SGEMSOCIAL2017/HB11/S12.108
References: 4th International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM2017, www.sgemvienna.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-93-3 / ISSN 2367-5659, March 28-31, Book1, Vol.1, 959-973 pp, DOI:10.5593/SGEMSOCIAL2017/HB11/S12.119
References: 4th International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM2017, www.sgemvienna.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-93-3 / ISSN 2367-5659, March 28-31, Book1, Vol.1, 975-982 pp, DOI:10.5593/SGEMSOCIAL2017/HB11/S12.120
References: 4th International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM2017, www.sgemvienna.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-93-3 / ISSN 2367-5659, March 28-31, Book1, Vol.1, 983-990 pp, DOI:10.5593/SGEMSOCIAL2017/HB11/S12.121
References: 4th International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM2017, www.sgemvienna.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-93-3 / ISSN 2367-5659, March 28-31, Book1, Vol.1, 991-998 pp, DOI:10.5593/SGEMSOCIAL2017/HB11/S12.122
References: 4th International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM2017, www.sgemvienna.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-93-3 / ISSN 2367-5659, March 28-31, Book1, Vol.1, 999-1006 pp, DOI:10.5593/SGEMSOCIAL2017/HB11/S12.123
References: 4th International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM2017, www.sgemvienna.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-93-3 / ISSN 2367-5659, March 28-31, Book1, Vol.1, 1007-1012 pp, DOI:10.5593/SGEMSOCIAL2017/HB11/S12.124
References: 4th International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM2017, www.sgemvienna.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-93-3 / ISSN 2367-5659, March 28-31, Book1, Vol.1, 1013-1020 pp, DOI:10.5593/SGEMSOCIAL2017/HB11/S12.125