Wolf, J. M. and Drosdoff, M. (1976) “Soil Water Studies on Oxisols and Ultisols of Puerto Rico: IV. A Comparison of Techniques to Determine Water Retention at Various Tensions”, The Journal of Agriculture of the University of Puerto Rico, 60(4), pp. 513–515. doi: 10.46429/jaupr.v60i4.10496.