There are multiple issues with this paper. i try to explain what Paperpile does to retrieve the information:
1) It parses the PDF for Author, Title, and identifiers like DOIs. In this case it can retrieve the title and the authors, no DOI. It is a scanned paper and the DOI is nowhere in the PDF, not even in the meta data.
2) It queries online resources. First it tries PubMed, then it uses CrossRef (http://search.crossref.org/). I just tried it on my machine and it finds the paper on CrossRef. It might be that the CrossRef search took to long and timed out and did not yield any result in your case.
3) However, the information Elsevier put into CrossRef is wrong (http://search.crossref.org/?q=10.1016%2FS0098-1354%2897%2900175-0). The DOI Elsevier put there leads to a ScienceDirect Error, and Paperpile cannot retrieve the better publication information from there.
It is a chain of errors thats leads to Paperpile not recovering the correct information.