https://books.google.co.uk/books?id=kZOFDwAAQBAJ&pg=PA85&lpg=PA85&dq=shamsul+duha+google+books&source=bl&ots=ygyoR4TIZm&sig=ACfU3U0v-2Ai5nCaFRZX84oSQ-bC7d9SZA&hl=en&sa=X&ved=2ahUKEwib2djlxbD4AhWL6qQKHffZAhwQ6AF6BAgeEAM#v=onepage&q=shamsul%20duha%20google%20books&f=false

Big Data London Speaker https://bigdataldn.com/speakers/shamsul-duha/