Mircea V. Diudea, Milan Randic. Matrix Operator, W(M1, M2, M3), and Schultz-Type Indices. Journal of Chemical Information and Computer Sciences, 37(6):1095-1100, 1997. [doi]
@article{DiudeaR97,
title = {Matrix Operator, W(M1, M2, M3), and Schultz-Type Indices},
author = {Mircea V. Diudea and Milan Randic},
year = {1997},
doi = {10.1021/ci970019u},
url = {http://dx.doi.org/10.1021/ci970019u},
researchr = {https://researchr.org/publication/DiudeaR97},
cites = {0},
citedby = {0},
journal = {Journal of Chemical Information and Computer Sciences},
volume = {37},
number = {6},
pages = {1095-1100},
}