| The significance of brushing time in removing dental plaque J George, J John Int J Dentistry Oral Sci 3 (8), 315-317, 2016 | 32 | 2016 |
| Morphology and ultrastructure of the tubes of Mastogloia cocconeiformis (Bacillariophyta) from Shark Bay, Western Australia J John Phycologia 32 (5), 388-394, 1993 | 13 | 1993 |
| Investigation in the algal flora of Thodupuzha taluk, Kerala J John, MS Francis Indian Hydrobiology 10, 79-86, 2007 | 10 | 2007 |
| An illustrated algal flora of Kerala. vol. I J John, MS Francis Idukki district. Green Carmel Scientific Books, Kochi, 2013 | 8 | 2013 |
| An Illustrated Algal Flora of Kerala, Vol. 1, Idukki District J John, MS Francis GCS Books, 2012 | 7 | 2012 |
| An illustrated algal flora of Kerala J John, MS Francis Vol. I., Kochi: Sci. Books, 2013 | 6 | 2013 |
| Wetland algal resources of western ghats (Idukki district region), Kerala, India. JJMS Francis International Journal of Basic and Applied Biology 4 (3), 34-41, 2010 | 6* | 2010 |
| Parlibellus panduriformis sp. nov.(Bacillariophyta) from Shark Bay, Western Australia J John Phycologia 30 (6), 556-562, 1991 | 6 | 1991 |
| Kumanoa chaugulei (Batrachospermales, Rhodophyta), a new species of freshwater red algae from the Western Ghats, India PS Jayalakshmi, J John Phycologia 60 (4), 314-320, 2021 | 5 | 2021 |
| Mapping microalgal resources of Idukki District, Kerala in Western Ghats, India J John, MS Francis Acta Biologica Indica 1 (1), 91-97, 2012 | 5 | 2012 |
| Hunting attempt by Nilgiri marten Martes gwatkinsi Horsfield, family Mustelidae, in Periyar Tiger Reserve, Kerala J John JOURNAL-BOMBAY NATURAL HISTORY SOCIETY 99 (2), 286-286, 2002 | 3 | 2002 |
| Identification of polyphenols using UPLC-QTOF MS/MS, in-vitro photoprotective and antiaging activities of brown macroalga Padina tetrastromatica G Sharma, J John Algal Research 75, 103255, 2023 | 2 | 2023 |
| Kumanoa periyarensis, a new species of freshwater red algae (Batrachospermales, Rhodophyta) from the Western Ghats, India PS Jayalakshmi, J John, A Sidharthan Phycologia 61 (4), 419-424, 2022 | 2 | 2022 |
| A systematic account of scenedesmaceae (sphaeropleales) from Periyar River, Kerala J PS, J John Int. J. Bot. Stud 5 (6), 482-488, 2020 | 2 | 2020 |
| Impact of massive flood in Kerala on the algal biodiversity of Periyar River PS Jayalakshmi, J John Indian Hydrobiology 18 (1&2), 11-18, 2019 | 2 | 2019 |
| Antipsychotics Induced Sexual Dysfunction J John, RP Thomas, S Paul, J EK, K Job Pharmacopsychiatry 46, 201-208, 2018 | 2 | 2018 |
| Investigation of the Algai Flora of Idukki District J John Kottayam, 2013 | 2 | 2013 |
| How I write R Thomas, C Kathy, D Jumaane, A Maria AUTHOR 114 (3; SEAS AUT), 121-121, 2003 | 2 | 2003 |
| Macrosporophycos sahyadricus (Batrachospermales, Rhodophyta), a new genus and species of freshwater red algae from the Western Ghats of India PS Jayalakshmi, J John Phycologia 62 (2), 109-116, 2023 | 1 | 2023 |
| Cost effectiveness analysis of risperidone and olanzapine in schizophrenic patients J John, S Paul, K Job, RP Thomas, U MK Value in Health 21, S216-S217, 2018 | 1 | 2018 |
