From this page you can download:
1. Entire book of "Proceedings 2015" (10 860KB, 111 pages, PDF)
2. Only chapters
"Sun and Solar Activity" and
"Solar Wind-Magnetosphere Interactions"
from the same book (7 375KB, 60 pages, PDF)
3. Only chapters
"Solar Influences on the Lower Atmosphere and Climate" and
"Data Proccessing and Modelling"
from the same book (1 615KB, 39 pages, PDF)
4. Only chapters
"Solar Effects in the Biosphere" and
"Instrumentation for Space Weather Monitoring"
from the same book (1 933KB, 21 pages, PDF)