PCCDA 2024 (https://www.scrs.in/conference/pccda2024) https://link.springer.com/book/9789819779451 PCCDA 2023 (https://scrs.in/conference/pccda23) https://link.springer.com/book/9789819946259 PCCDS 2022 (https://pccds22.scrs.in/) https://link.springer.com/book/10.1007/978-981-19-8742-7 PCCDS 2021 https://link.springer.com/book/10.1007/978-981-16-5747-4