1. The use of the system is restricted to scholarly and personal use; you may not use it in any way for any commercial purpose.
2. Systematic downloading of significant portions or sequential chapters of the materials is prohibited. Using robots or intelligent agents which may damage the performance of the database is strictly prohibited.
3. Users must take full responsibility for their illegal or undue usage that leads to any infringements of intellectual property rights.
4. Read all of the publishers' regulations and copyright declarations, users who violate intellectual property rights may take all legal responsibilities.