Here's a link to a PDF of the original 1978 paper: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.132.6772&rep=rep1&type=pdf http://citeseerx.ist.psu

Here's a link to a PDF of the original 1978 paper: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.132.6772&rep=rep1&type=pdf http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.132...