pageRank = (1 - p) / n;

// for each Node that links to this one
for (Node linksHereNode : linksIn.values())
{
    pageRank += p * linksHereNode.getPageRank() * linksInCount.get(linksHereNode.getURL()) / linksHereNode.getLinksOutTotal();
    // pagerank += p * PR(node that links here) * number of times that node links here / number of outward links the node linking here has;
}