HN hug? :) The title of the paper is "The String-to-String Correction Problem with Block Moves". You can search for it with filetype:pdf on Google. Here is an

HN hug? :) The title of the paper is "The String-to-String Correction Problem with Block Moves". You can search for it with filetype:pdf on Google. Here is another link (even better quality): https://www.researchgate.net/profile/Walter_Tichy/publication/220439403_The_String-to-String_Correction_Problem_With_Block_Moves/links/53d63a7f0cf228d363ea46d3/The-String-to-String-Correction-Problem-With-Block-Moves.pdf https://www.researchgate.net/profile/Walter_Tichy/publicatio... For some reason, I cannot edit my previous comment :(