to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
shall be valid for the life of the Author and 50 (fifty) years after his death.
When a Work as referred to in paragraph (1) is jointly owned by 2 (two) persons or more, the Copyright shall be for the life of the longest survival Author and shall be continue 50 (fifty) years after the death of the said longest surviving Author.