Please give refrences also

1. Using the learning materials covered, answer the following question(s). . Discussion question: . Conduct some online research and find an article about one of the following planning systems: aggregate production planning, master production planning, material requirements planning, or distribution requirements planning. Once you have found an article, share the link in the discussion board and then provide a summary of the article. Secondly, describe how are these plans related to each other? . Note: Be sure to check the discussion board prior to posting to ensure that none of your fellow classmates have used the same article. 2. Then, once you have completed the exercise question(s) post your thoughts, observations, and Aha moments within the Discussion Forum. (2 pts 3. Review and reply to a minimum of two forum posts - be sure to elaborate on their thoughts and insights. (1pt)